The expression
$\displaystyle {\frac{{{\left({x}^{{3}}{y}^{{3}}\right)}^{{5}}{\left({x}{y}^{{5}}\right)}^{{-{3}}}}}{{{x}^{{3}}{y}^{{6}}}}}$

equals $\displaystyle \frac{{x}^{{{e}}}}{{y}^{{{d}}}}$ where
the exponent $\displaystyle {e}$ of $\displaystyle {x}$ is , the exponent $\displaystyle {d}$ of $\displaystyle {y}$ is .