We're going to solve 3720 multiplied by 2172
3720 × 2172 = 2172 × (3720)
+ 2172 × 0 what gives us 0
+ 2172 × 20 that results in 43440
+ 2172 × 700 which equals 1520400
+ 2172 × 3000 yielding 6516000

= 8079840
