Alright, let's work through 8039 times 1339 step by step
8039 × 1339 = 1339 × (8039)
+ 1339 × 9 what gives us 12051
+ 1339 × 30 yielding 40170
+ 1339 × 000 producing 0
+ 1339 × 8000 that results in 10712000

= 10764221
