We're going to solve 7861 multiplied by 2457
7861 × 2457 = 2457 × (7861)
+ 2457 × 1 what gives us 2457
+ 2457 × 60 producing 147420
+ 2457 × 800 that results in 1965600
+ 2457 × 7000 yielding 17199000

= 19314477
