We're going to solve 3680 multiplied by 8491
3680 × 8491 = 8491 × (3680)
+ 8491 × 0 yielding 0
+ 8491 × 80 producing 679280
+ 8491 × 600 what gives us 5094600
+ 8491 × 3000 that is equal 25473000

= 31246880
