We're going to solve 3869 multiplied by 6638
3869 × 6638 = 6638 × (3869)
+ 6638 × 9 what gives us 59742
+ 6638 × 60 giving us 398280
+ 6638 × 800 resulting in 5310400
+ 6638 × 3000 what gives us 19914000

= 25682422
