We're going to solve 5603 multiplied by 7520
5603 × 7520 = 7520 × (5603)
+ 7520 × 3 resulting in 22560
+ 7520 × 00 which equals 0
+ 7520 × 600 that is equal 4512000
+ 7520 × 5000 that equals 37600000

= 42134560
