10. \(3\frac{3}{5}\div1\frac{4}{5}\)

\(3\frac{3}{5}=\frac{18}{5},\quad1\frac{4}{5}=\frac{9}{5}\).

\[\frac{18}{5}\div\frac{9}{5}=\frac{18}{5}\times\frac{5}{9}=2\]

Ответ: 2.