why 4^10/8^6 = 4 ??

4^10 IS 1048576 8^6 is 262144 so 1048576/262144 is 4

$4^{10} = 2^{20}$

$8^6 = 2^{18}$

$2^{20} \div 2^{18} = 2^2 = \color{brown}\boxed{4}$