We're going to solve 6379 multiplied by 2280
6379 × 2280 = 2280 × (6379)
+ 2280 × 9 yielding 20520
+ 2280 × 70 that results in 159600
+ 2280 × 300 what gives us 684000
+ 2280 × 6000 producing 13680000

= 14544120
