We're going to solve 3645 multiplied by 1139
3645 × 1139 = 1139 × (3645)
+ 1139 × 5 yielding 5695
+ 1139 × 40 giving us 45560
+ 1139 × 600 that results in 683400
+ 1139 × 3000 what gives us 3417000

= 4151655
