We're going to solve 3861 multiplied by 1658
3861 × 1658 = 1658 × (3861)
+ 1658 × 1 producing 1658
+ 1658 × 60 giving us 99480
+ 1658 × 800 what gives us 1326400
+ 1658 × 3000 that results in 4974000

= 6401538
