Find the volume of box whose dimensions are $3xy^2,\large\frac{1}{7}$$x^3$ and $\large\frac{4}{5}$$x^2y$

Question

$\begin{array}{1 1} 12x^6y^3 \\ \frac{12}{35} x^6 y^3 \\ \frac{11}{35} x^6y \\ \frac{12}{35}xy \end{array} $