Найди произведение: 2 1/10*1 1/14.

\[2\frac{1}{10} \cdot 1\frac{1}{14} = \frac{21}{10} \cdot \frac{15}{14} = \frac{3 \cdot 5 \cdot 3}{5 \cdot 2 \cdot 2} = \frac{9}{4} = 2\frac{1}{4}\]