55*18 = (5*11)*(2*9)= (5*2)*(.....*.......)=.............
25*7*12 = 25 * 7 * ( 4 * 3 )=(.......*.......)*(.......*.......)=.........
28*50*150 =(2*2*7)*50*(5*3)=............

55*18=(5*11)*(2*9)=(5*2)*(9*11)=10925*7*12=25*7(4*3)=(25*4)*(3*7)=12128*50*150=(2*2*7)*50*(5*3)=(5*50)*(2*3)*(2*7)=250+6+14=270