Alright, let's work through 7866 times 9982 step by step
7866 × 9982 = 9982 × (7866)
+ 9982 × 6 what gives us 59892
+ 9982 × 60 resulting in 598920
+ 9982 × 800 producing 7985600
+ 9982 × 7000 which equals 69874000

= 78518412
