We're going to solve 6389 multiplied by 3459
6389 × 3459 = 3459 × (6389)
+ 3459 × 9 producing 31131
+ 3459 × 80 producing 276720
+ 3459 × 300 which equals 1037700
+ 3459 × 6000 resulting in 20754000

= 22099551
