42) 1 7/6 · 2 7/8

\(1\frac{7}{6}=\frac{13}{6}\), \(2\frac{7}{8}=\frac{23}{8}\).

\(\frac{13}{6}\cdot\frac{23}{8}=\frac{299}{48}=6\frac{11}{48}\).

Ответ: \(6\frac{11}{48}\).