Esegui la seguente espressione

$$\left(\frac{7}{3}-\frac{3}{2}\right)\times\left(\frac{1}{3}-\frac{1}{5}\right)=$$

$$\left(\frac{14-9}{6}\right)\times\left(\frac{5-3}{15}\right)=$$

$$\frac{5}{6}\times\frac{2}{15}=$$

$$\frac{5}{15}\times\frac{2}{6}=$$

$$\frac{1}{3}\times\frac{1}{3}=$$

$$\frac{1}{9}$$