Задача 9: \(\frac{6^8}{63\cdot6^2}\)

\[ \frac{6^8}{63\cdot6^2}=\frac{6^{8-2}}{63}=\frac{6^6}{63}=\frac{46656}{63}=\frac{15552}{21}=\frac{5184}{7}. \]

Ответ: \(\frac{5184}{7}\).