\[\frac{\frac{3}{\text{xy}} - \frac{2}{y} + \frac{1}{x}}{3 - 2x - y}\ :\frac{x^{2}}{y} =\]
\[= \frac{\frac{3 - x \cdot 2 + 4}{\text{xy}}}{3 - 2x + y} \cdot \frac{y}{x^{2}} =\]