We're going to solve 6399 multiplied by 2459
6399 × 2459 = 2459 × (6399)
+ 2459 × 9 what gives us 22131
+ 2459 × 90 giving us 221310
+ 2459 × 300 giving us 737700
+ 2459 × 6000 giving us 14754000

= 15735141
