Ответ:

\(1\frac{1}{5}=\frac{6}{5}\), \(1\frac{1}{15}=\frac{16}{15}\).

\(\frac{2}{3}-\frac{16}{15}=\frac{10-16}{15}=-\frac{6}{15}=-\frac{2}{5}\).

\(\frac{6}{5}:\left(-\frac{2}{5}\right)=-3\).

Ответ: \(-3\).