Alright, let's work through 3863 times 9901 step by step
3863 × 9901 = 9901 × (3863)
+ 9901 × 3 that results in 29703
+ 9901 × 60 producing 594060
+ 9901 × 800 yielding 7920800
+ 9901 × 3000 that results in 29703000

= 38247563
