Question

I just want to clarify how to find this, i havn't done this in a while.

Answer 1

You could either use a calculator on the internet or do it manually:

512
128 * 4
32 * 4 * 4
8 * 4 * 4 * 2 * 2
8 * 8 * 4 * 2


8 * 8 * 8 = 512

$\sqrt[3]{512} = 8$