36) \(\frac{1}{a}\cdot\frac{a^2}{5}\)

Сократим на \(a\):

\[\frac{1}{a}\cdot\frac{a^2}{5}=\frac{a^2}{5a}=\frac{a}{5}.\]

Ответ: \(\frac{a}{5}\), \(a\ne0\).