How to make a simple calculator with python

from tkinter import * def add(): a = float(ent1.get()) b = float(ent2.get()) c = a + b result.config(text=str(c)) def subtract(): a = float(ent1.get()) b = float(ent2.get()) c = a - b result.config(text=str(c)) def multipy(): a = float(ent1.get()) b = float(ent2.get()) c = a * b result.config(text=str(c)) def divide(): a = float(ent1.get()) b = float(ent2.get()) c = a / b result.config(text=str(c)) window=Tk() window.geometry("550x500") window.title("Calculator") window.resizable(False,False) f1=Frame(window,bg="lavender") f1.pack(expand=True,fill=BOTH) la1=Label(f1,bg="lavender",fg="red",text="First Number:",font=("",25)) la1.place(x=20,y=20) la2=Label(f1,bg="lavender",fg="red",text="Second Number:",font=("",25)) la2.place(x=20,y=98) ent1=Entry(f1,bg="lavender",fg="blue",bd=3) ent1.place(x=300,y=26) ent2=Entry(f1,bg="lavender",fg="blue",bd=3) ent2.place(x=300,y=110) btn1=Button(f1,bg="lavender",fg="blue",text="Add",font=("",27),command=add) btn1.place(x=161,y=220) btn2=Button(f1,bg="lavender",fg="blue",text="Subtract",font=("",27),command=subtract) btn2.place(x=384,y=220) btn3=Button(f1,bg="lavender",fg="blue",text="Multipy",font=("",27),command=multipy) btn3.place(x=23,y=220) btn4=Button(f1,bg="lavender",fg="blue",text="Divide",font=("",27),command=divide) btn4.place(x=263,y=220) Result=Label(f1,bg="lavender",fg="purple",text="Result:",font=("",29)) Result.place(x=100,y=400) result=Label(f1,bg="lavender",fg="green",text="",font=("",29)) result.place(x=300,y=400) window.mainloop()