if e^8=2980.9580, what does e^3 =?
e is just a number
$${{\mathtt{e}}}^{{\mathtt{1}}} = {\mathtt{2.718\: \!281\: \!828\: \!459\: \!045\: \!2}}$$
you do not need to know what e^8 is to work out e^3
just do it on a calculator.
Just go to the on-site calculator and evaluate it....we're not "solving" anything........