Alright, let's work through 8039 times 4997 step by step
8039 × 4997 = 4997 × (8039)
+ 4997 × 9 producing 44973
+ 4997 × 30 what gives us 149910
+ 4997 × 000 producing 0
+ 4997 × 8000 that equals 39976000

= 40170883
