Alright, let's work through 3986 times 6602 step by step
3986 × 6602 = 6602 × (3986)
+ 6602 × 6 that results in 39612
+ 6602 × 80 that results in 528160
+ 6602 × 900 giving us 5941800
+ 6602 × 3000 producing 19806000

= 26315572
