3) 5 1/8 : 1 9/32

\(5\frac{1}{8}=\frac{41}{8}\), \(1\frac{9}{32}=\frac{41}{32}\).

\(\frac{41}{8}:\frac{41}{32}=\frac{41}{8}\cdot\frac{32}{41}=4\).

Ответ: 4