[tex]9*16*5[/tex]
[tex]=144*5[/tex]
[tex]=720[/tex]
(3 * 3) * (4 * 4) * 5 = 720
3 times 3 = 9, and 4 times 4 = 16, so 9 * 16 is 144, than, you have to multiply by 5 and get 720
