Answer: The answer i got is 7200. by using simple multiplication.
2 times 15 times 4 times 2 times 30.
So first i did 2 times 15(30) then did 4 times 2(8) and left the 30 how it is
Then multiplied the 30 by 8 which is 240.
Then multiplied the 240 by 30 which is how i got 7200 in^3