We're going to solve 6391 multiplied by 4319
6391 × 4319 = 4319 × (6391)
+ 4319 × 1 that equals 4319
+ 4319 × 90 that equals 388710
+ 4319 × 300 that is equal 1295700
+ 4319 × 6000 producing 25914000

= 27602729
