We're going to solve 4003 multiplied by 5180
4003 × 5180 = 5180 × (4003)
+ 5180 × 3 that results in 15540
+ 5180 × 00 giving us 0
+ 5180 × 000 which equals 0
+ 5180 × 4000 yielding 20720000

= 20735540
