2*32*12*4*6*41= ( 2 * 12) * (32*41) * (4*6)
= 24 * 1312 * 24
= 24 *24 * 1312
= 576 * 1312
= 755712
2*33*7+7*2*45+7*22*2 = 7 * ( 2*33+ 2*45 + 22*2)
= 7 * ( 66+90+44)
= 7* 200 = 1400
17*85+15*17-120 = 17 * ( 85 + 15) - 120
= 17*100- 120
=1700-120
= 1580