We're going to solve 6429 multiplied by 3391
6429 × 3391 = 3391 × (6429)
+ 3391 × 9 resulting in 30519
+ 3391 × 20 which equals 67820
+ 3391 × 400 resulting in 1356400
+ 3391 × 6000 which equals 20346000

= 21800739
