How do you multiply (4y)/7divy^2/14*3/y?

$\frac{x}{y} \setminus \div i \mathrm{de} \frac{a}{b} = \frac{x}{y} \setminus \cdot \frac{b}{a}$
$\frac{4 y}{7} \div {y}^{2} / 14 \cdot \frac{3}{y} = \frac{4 y}{7} \setminus \cdot \frac{14}{y} ^ 2 \cdot \frac{3}{y}$
$\frac{4 y}{7} \setminus \cdot \frac{14}{y} ^ 2 \cdot \frac{3}{y} = \frac{4 y \cdot 14 \cdot 3}{7 \cdot {y}^{2} \cdot y} = \frac{4 \cdot 14 \cdot 3}{7 \cdot {y}^{2}} = \frac{4 \cdot 2 \cdot 3}{{y}^{2}} = \frac{24}{{y}^{2}}$