It says to multiply.

2y and 14x^5y
___ ______
7x^2 y^5

so, multiply. a/b * c/d = ab/cd

2y/7x^2 * 14x^5y/y^5

= (2y)(14x^5y)/(7x^2 * y^5)

= 28x^5y^2/7x^2y^5

= 28x^3/y^3