Math help me with finding the LCM of a monomial

Here are the monomials: 15x3y4, 30x6, 60y4x3

> Confused <

15x^3 y^4: ..........3 * 5 * x^3 * .......y^4
30x^6:.......2 * .....3 * 5 * x^3 * x^3
60x^3 y^4:.2 * 2 * 3 * 5 * ...............y^4
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................2 * 2 * 3 * 5 * x^3 * x^3 *y^4 = 60x^6 y^4 = LCM