Use L$\text{'}$H$$pital$\text{'}$s rule to evaluate $\underset{x}{lim}\frac{f(x)}{g(x)}$ for the given functions.

$f(x)=8^x,g(x)=15ln(x)$

Write the exact answer. Enter oo for $.$

$\underset{x}{lim}\frac{f(x)}{g(x)}=$