Question 781794
{{{(xy)^-3/(x^-5*y)^3}}}


{{{(1/(xy)^3)/((1/x^5)*y)^3}}}


{{{(1/(xy)^3)/(y/x^5)^3}}}


{{{(1/(x^3*y^3))/(y^3/x^15)}}}


{{{x^15/(x^3*y^3*y^3)}}}


{{{x^cross(15)^12/(cross(x^3)*y^6)}}}


{{{x^12/y^6}}}