Alright, let's work through 3982 times 4988 step by step
3982 × 4988 = 4988 × (3982)
+ 4988 × 2 that results in 9976
+ 4988 × 80 giving us 399040
+ 4988 × 900 producing 4489200
+ 4988 × 3000 which equals 14964000

= 19862216
