screen_small_frame = tk.Frame(window,
                              width = "550",
                              height = "40",
                              borderwidth = 1.5,
                              relief = "solid")
screen_frame = tk.Frame(window,
                        width = "550",
                        height = "90",
                        borderwidth = 1.5,
                        relief = "solid")
screen_small = tk.Label(screen_small_frame,
                        textvariable = screen_text_small,
                        font = ("Comic Sans MS", 12, "bold"),
                        anchor = "w")
screen = tk.Label(screen_frame,
                  textvariable = screen_text,
                  font = ("Comic Sans MS", 32, "bold"),
                  anchor = "w")
one_button_frame = tk.Frame(window,
                            width = "100",
                            height = "80")
one_button = tk.Button(one_button_frame,
                       text = "1",
                       font = ("Comic Sans MS", 32,  "bold"),
                       command = one_btn_click)
two_button_frame = tk.Frame(window,
                            width = "100",
                            height = "80")
two_button = tk.Button(two_button_frame,
                       text = "2",
                       font = ("Comic Sans MS", 32,  "bold"),
                       command = two_btn_click)
three_button_frame = tk.Frame(window,
                              width = "100",
                              height = "80")
three_button = tk.Button(three_button_frame,
                         text = "3",
                         font = ("Comic Sans MS", 32,  "bold"),
                         command = three_btn_click)
four_button_frame = tk.Frame(window,
                            width = "100",
                            height = "80")
four_button = tk.Button(four_button_frame,
                       text = "4",
                       font = ("Comic Sans MS", 32,  "bold"),
                       command = four_btn_click)
five_button_frame = tk.Frame(window,
                            width = "100",
                            height = "80")
five_button = tk.Button(five_button_frame,
                       text = "5",
                       font = ("Comic Sans MS", 32,  "bold"),
                       command = five_btn_click)
six_button_frame = tk.Frame(window,
                              width = "100",
                              height = "80")
six_button = tk.Button(six_button_frame,
                         text = "6",
                         font = ("Comic Sans MS", 32,  "bold"),
                         command = six_btn_click)
seven_button_frame = tk.Frame(window,
                            width = "100",
                            height = "80")
seven_button = tk.Button(seven_button_frame,
                       text = "7",
                       font = ("Comic Sans MS", 32,  "bold"),
                       command = seven_btn_click)
eight_button_frame = tk.Frame(window,
                            width = "100",
                            height = "80")
eight_button = tk.Button(eight_button_frame,
                       text = "8",
                       font = ("Comic Sans MS", 32,  "bold"),
                       command = eight_btn_click)
nine_button_frame = tk.Frame(window,
                              width = "100",
                              height = "80")
nine_button = tk.Button(nine_button_frame,
                        text = "9",
                        font = ("Comic Sans MS", 32,  "bold"),
                        command = nine_btn_click)
add_button_frame = tk.Frame(window,
                            width = "100",
                            height = "80")
add_button = tk.Button(add_button_frame,
                       text = "+",
                       font = ("Comic Sans MS", 32,  "bold"),
                       command = add_btn_click)
sum_button_frame = tk.Frame(window,
                            width = "100",
                            height = "80")
sum_button = tk.Button(sum_button_frame,
                       text = "=",
                       font = ("Comic Sans MS", 32,  "bold"),
                       command = sum_btn_click)
zero_button_frame = tk.Frame(window,
                              width = "100",
                              height = "80")
zero_button = tk.Button(zero_button_frame,
                        text = "0",
                        font = ("Comic Sans MS", 32,  "bold"),
                        command = zero_btn_click)


screen_small_frame.grid(row = 0,
                        column = 0,
                        columnspan = 5)
screen_small_frame.grid_propagate(0)
screen_small.grid()

screen_frame.grid(row = 1,
                  column = 0,
                  columnspan = 5)
screen_frame.grid_propagate(0)
screen.grid()

seven_button_frame.grid(row = 3,
                      column = 0,
                      padx = 5,
                      pady = 5)
seven_button_frame.grid_propagate(0)
seven_button.grid(sticky = "nesw")

eight_button_frame.grid(row = 3,
                      column = 1,
                      padx = 5,
                      pady = 5)
eight_button_frame.grid_propagate(0)
eight_button.grid(sticky = "nesw")

nine_button_frame.grid(row = 3,
                        column = 2,
                        padx = 5,
                        pady = 5)
nine_button_frame.grid_propagate(0)
nine_button.grid(sticky = "nesw")

four_button_frame.grid(row = 4,
                      column = 0,
                      padx = 5,
                      pady = 5)
four_button_frame.grid_propagate(0)
four_button.grid(sticky = "nesw")

five_button_frame.grid(row = 4,
                      column = 1,
                      padx = 5,
                      pady = 5)
five_button_frame.grid_propagate(0)
five_button.grid(sticky = "nesw")

six_button_frame.grid(row = 4,
                        column = 2,
                        padx = 5,
                        pady = 5)
six_button_frame.grid_propagate(0)
six_button.grid(sticky = "nesw")

one_button_frame.grid(row = 5,
                      column = 0,
                      padx = 5,
                      pady = 5)
one_button_frame.grid_propagate(0)
one_button.grid(sticky = "nesw")

two_button_frame.grid(row = 5,
                      column = 1,
                      padx = 5,
                      pady = 5)
two_button_frame.grid_propagate(0)
two_button.grid(sticky = "nesw")

three_button_frame.grid(row = 5,
                        column = 2,
                        padx = 5,
                        pady = 5)
three_button_frame.grid_propagate(0)
three_button.grid(sticky = "nesw")

add_button_frame.grid(row = 5,
                      column = 3,
                      padx = 5,
                      pady = 5)
add_button_frame.grid_propagate(0)
add_button.grid(sticky = "nesw")

sum_button_frame.grid(row = 5,
                      column = 4,
                      padx = 5,
                      pady = 5)
sum_button_frame.grid_propagate(0)
sum_button.grid(sticky = "nesw")

zero_button_frame.grid(row = 6,
                      column = 0,
                      columnspan = 3,
                      padx = 5,
                      pady = 5)
zero_button_frame.grid_propagate(0)
zero_button.grid(sticky = "nesw")