56 * 43 + 56 * 57 and 25 * 46 * 4 are calculated by simple method

56 * 43 + 56 * 57 and 25 * 46 * 4 are calculated by simple method

56*43+56*57=56*(43+57)=56*100=5600
25*46*4=25*4-46=100*46=4600