Answer :
[tex]324=3\times108\\\\therefore:\\\\324\times4=(3\times108)\times4=3\times(108\times4)!!\\\\solving:\\\\108\times4=432\\\\therefore:\\\\324\times4=3\times432=\boxed{1296}[/tex]
108 is 1/3 of 324 so 324*4=(108*4)*3
you multiply the product of 108*4 by thee to get 324*4
you multiply the product of 108*4 by thee to get 324*4