A = 2 * 3 * a, B = 3 * 5 * B, the greatest common divisor of a and B is 15, and the least common multiple of a and B is?

A = 2 * 3 * a, B = 3 * 5 * B, the greatest common divisor of a and B is 15, and the least common multiple of a and B is?

A = 5, B = 1, a is 30, B is 15, the least common multiple is 30