Finding the Least Common Multiple

Problem

Write a program that asks the user to enter two non-negative integers and finds their least common multiple (LCM).

The least common multiple (LCM) is the smallest non-zero number, which is a multiple of two or more numbers. For example, $12$ is the least common multiple of $6$ and $4$, as $12 = 6 \times 2$ and $12 = 3 \times 4$. Note that $24$ is also a common multiple of $4$ and $6$ but it is not the lowest.