Refactoring Python's code - with variables

Hi I'm learning Python by myself and I'm tying to refactor this code. I want to use declaration and invoke of the function.

So the original code is:

num1 = int(input("Enter a number: "))
num1 = num1**2
num1 = num1 - 5
num1 = num1 / 3
num2 = int(input("Enter another number: "))
num2 = num2**2
num2 = num2 - 5
num2 = num2 / 3
result = Math.sqrt(num1*num2)

What I'm doing so far. Any suggestions?:

import math

def calculate(num1,num2, result):
    num1 = int(input("Enter a number: "))
    num1 = num1**2
    num1 = num1 - 5
    num1 = num1 / 3

    num2 = int(input("Enter another number: "))
    num2 = num2**2
    num2 = num2 - 5
    num2 = num2 / 3

    result = math.sqrt(num1*num2)

    return(result)

 print(calculate())

source https://stackoverflow.com/questions/74131377/refactoring-pythons-code-with-variables