We're going to solve 1809 multiplied by 6421
1809 × 6421 = 6421 × (1809)
+ 6421 × 9 producing 57789
+ 6421 × 00 producing 0
+ 6421 × 800 which equals 5136800
+ 6421 × 1000 producing 6421000

= 11615589
