最小公倍数

def solve():
    def gcd(a, b):
        while b:
            a, b = b, a % b
        return a
    def lcm(a, b):
        return a * b // gcd(a, b)
    print(f"lcm(12, 18) = {lcm(12, 18)}")
    print(f"lcm(15, 25) = {lcm(15, 25)}")