We're going to solve 1280 multiplied by 3657
1280 × 3657 = 3657 × (1280)
+ 3657 × 0 that equals 0
+ 3657 × 80 yielding 292560
+ 3657 × 200 that is equal 731400
+ 3657 × 1000 that results in 3657000

= 4680960
