9. \(\frac{45}{4}\cdot\frac{6}{15}\)

\[\frac{45}{4}\cdot\frac{6}{15}=\frac{45}{15}\cdot\frac{6}{4}=3\cdot\frac{3}{2}=\frac{9}{2}=4\frac{1}{2}\]

Ответ: \(4\frac{1}{2}\)