We're going to solve 3688 multiplied by 4480
3688 × 4480 = 4480 × (3688)
+ 4480 × 8 giving us 35840
+ 4480 × 80 what gives us 358400
+ 4480 × 600 giving us 2688000
+ 4480 × 3000 producing 13440000

= 16522240
