We're going to solve 3897 multiplied by 4009
3897 × 4009 = 4009 × (3897)
+ 4009 × 7 that results in 28063
+ 4009 × 90 that equals 360810
+ 4009 × 800 producing 3207200
+ 4009 × 3000 which equals 12027000

= 15623073
