\[ \frac{3}{7} \times \frac{7}{8} = \frac{3 \times 7}{7 \times 8} = \frac{3}{8} \]
\[ 2 - \frac{3}{8} = \frac{2 \times 8}{8} - \frac{3}{8} = \frac{16}{8} - \frac{3}{8} = \frac{16 - 3}{8} = \frac{13}{8} \]
\[ \frac{13}{8} = 1 \frac{5}{8} \]
Ответ: 1 5/8