Combinations calculator in Python

combinations-calculator.py

def combinations(n,k):
    def factorial(n):
        fact = 1
        
        for i in range(1, n+1):
            fact = fact * i

        return(fact)
    result = int(factorial(n) / (factorial(k) * factorial(n-k)))
    return(f"{result:,}".replace(",", " "))

# 1st example of usage:
print(combinations(int(input("How many elements in the set? ")), int(input("How many elements in the subset? "))))
# 2nd example of usage:
print(combinations(62, 5))
# 3rd example of usage:
n = 62
k = 5
print(combinations(n, k))