We're going to solve 4289 multiplied by 6728
4289 × 6728 = 6728 × (4289)
+ 6728 × 9 what gives us 60552
+ 6728 × 80 yielding 538240
+ 6728 × 200 producing 1345600
+ 6728 × 4000 resulting in 26912000

= 28856392
