в) \(\frac{1\frac{1}{3}}{2\frac{1}{6}}\) = \(\frac{\frac{4}{3}}{\frac{13}{6}}\) = \(\frac{4}{3} \cdot \frac{6}{13}\) = \(\frac{4 \cdot 2}{13}\) = \(\frac{8}{13}\)
Ответ: \(\frac{8}{13}\)