(x^3y/(xy^2)) * (3x^2y)/(8x^3)
=color(red)((x^3*y)/(x*y*y))* color(blue)((3*x*x*y)/(8*x^3))
=color(red)((cancel(x^3)*y)/(x*y*y))* color(blue)((3*x*x*y)/(8*cancel(x^3)))
=color(red)((y)/(cancel(x) * y * y)) * color(blue)((3 * cancel(x) * x * y)/(8))
=color(red)(cancel(y))/(cancel(y) * cancel(y)) * color(blue)((3 * x * cancel(y)))/(8)
= (3x)/8