Evaluate each of the following expressions.
Your answer must be in simplest form [ a proper fraction or mixed number]

If $p={\frac{1}{3}}$ and $q=3 \frac{ 2}{7}$ then $p^2q=$

If $s={\frac{1}{7}}$ and $t=2 \frac{ 4}{7}$ then $t^2/s=$