Simplify the expression

$\displaystyle {\frac{{{6}{y}^{{3}}}}{{{x}{y}-{6}{y}}}}$

Give your answer in the form of $\displaystyle {\frac{{{f{{\left({x}\right)}}}}}{{{g{{\left({x}\right)}}}}}}.$

Your answer for the function $\displaystyle {f{{\left({x}\right)}}}$ is : Preview Question 6 Part 1 of 2  
Your answer for the function $\displaystyle {g{{\left({x}\right)}}}$ is : Preview Question 6 Part 2 of 2