2) \(\frac{3}{7}\cdot\frac{3}{10}:\frac{9}{14}=\)

\[\frac{3}{7}\cdot\frac{3}{10}:\frac{9}{14}=\frac{3}{7}\cdot\frac{3}{10}\cdot\frac{14}{9}=\frac{1}{5}\]

Ответ: \(\frac{1}{5}\).