Simplify and write the answer in the exponential form : $\left[\right(2^2{)}^3\times 3^6]\times 5^6$

Given $\left[\right(2^2{)}^3\times 3^6]\times 5^6$
$=2^6\times 3^6\times 5^6$
$=3^6\times (2\times 5{)}^6$ [Since, $a^m\times b^m=(ab{)}^m$]
$=3^6\times {10}^6$
$=(3\times 10{)}^6$
$={30}^6$