4x^2 / x^2 =
(25y^2m) / (5y^-3m)=
3y
5y^5m
3a / (1/3)a =
9
(-8x^3)/2x
(24y^-2) / ( 8y^-3) =
36x
4
-4x^2
(6x^3) /(1/6)x^2 =
