Whenever you have to divide variables that have exponents, you just have to subtract the exponents.
So for x, you have an 11 on top, and a 1 on the bottom, so you would be left with x^10 on top.
For y, you have a 2 on top and on bottom, so the y's go away.
For z, you have a 5 on top and 3 on bottom, so you would end up with a z^2 on top
100/120 can be simplified to 5/6
Final answer: (5x^10z^2)/6