16) $$\frac{2}{9} \cdot \frac{3}{10} \cdot \frac{7}{8}$$

$$\frac{2}{9} \cdot \frac{3}{10} \cdot \frac{7}{8} = \frac{2 \cdot 3 \cdot 7}{9 \cdot 10 \cdot 8} = \frac{42}{720} = \frac{7}{120}$$ Ответ: $$\frac{7}{120}$$