from tkinter import *
from tkinter import messagebox
import math

window = Tk()
window.title('Взнос')
window.geometry('430x500')
window.resizable(False, False)

font_header = ('Arial', 15)
font_entry = ('Arial', 12)
label_font = ('Arial', 11)
base_padding = {'padx': 10, 'pady': 8}
header_padding = {'padx': 10, 'pady': 12}

def clicked():
    coast = float(coast_entry.get())
    ageUse = float(ageUse_entry.get())
    fines = float(fines_entry.get())
    accidents = float(accidents_entry.get())
    age = float(age_entry.get())
    sum = ((coast * (1 -  (ageUse / 10)) * 0.1) + (0.2 * fines)) + (accidents - 0.2 * age) 
    messagebox.showinfo('Операция размера выплаты', 'Размер выплаты = {sum} Eth.'.format(sum=sum))

main_label = Label(window, text='Сумма взноса', font=font_header, justify=CENTER, **header_padding)
main_label.pack()
coast_label = Label(window, text='Рыночная стоимость тс', font=label_font , **base_padding)
coast_label.pack()

coast_entry = Entry(window, bg='#fff', fg='#444', font=font_entry)
coast_entry.pack()

ageUse_label = Label(window, text='Срок эксплуатации тс', font=label_font , **base_padding)
ageUse_label.pack()

ageUse_entry = Entry(window, bg='#fff', fg='#444', font=font_entry)
ageUse_entry.pack()

fines_label = Label(window, text='Количество неоплаченных штрафов', font=label_font , **base_padding)
fines_label.pack()

fines_entry = Entry(window, bg='#fff', fg='#444', font=font_entry)
fines_entry.pack()

accidents_label = Label(window, text='Количество ДТП водителя', font=label_font , **base_padding)
accidents_label.pack()

accidents_entry = Entry(window, bg='#fff', fg='#444', font=font_entry)
accidents_entry.pack()

age_label = Label(window, text='Водительский стаж', font=label_font , **base_padding)
age_label.pack()

age_entry = Entry(window, bg='#fff', fg='#444', font=font_entry)
age_entry.pack()

send_btn = Button(window, text='Провести расчет выплаты', command=clicked)
send_btn.pack(**base_padding)
window.mainloop()