Alright, let's work through 1387 times 9897 step by step
1387 × 9897 = 9897 × (1387)
+ 9897 × 7 resulting in 69279
+ 9897 × 80 producing 791760
+ 9897 × 300 producing 2969100
+ 9897 × 1000 yielding 9897000

= 13727139
