Multiplying whole numbers 1st example : 98 X 37 2nd Example : 90 x 865 ( In this problem, I put 865 on top and 90 on the bottom, they drop the zero and multiply 865 x 9 and write that in front of the zero ) 3rd Example: 900 x 30 ( In this problem, they write three zeros, and multiply 9 x 3 and write 27 in front of the zeros.