Fractional number (in words) for the given fraction $\frac{6}{15}$ is six- $\left(\mathrm{fifteen} / \mathrm{tenths} / \mathrm{fifteenth}\right)$.

Determine number of balls we get by

 $\frac{2}{3}$ of $27$ balls.

If $\frac{3}{4}$ of $32$books is $k$ books, then find the value of $k$.