9. \(\frac{(a^4)^5}{a^{18}}\) при \(a=6\)

\(\frac{(a^4)^5}{a^{18}} = \frac{a^{4 \cdot 5}}{a^{18}} = \frac{a^{20}}{a^{18}} = a^{20-18} = a^2\). Подставим \(a=6\): \(6^2 = 36\).