Alright, let's work through 7990 times 5079 step by step
7990 × 5079 = 5079 × (7990)
+ 5079 × 0 resulting in 0
+ 5079 × 90 resulting in 457110
+ 5079 × 900 yielding 4571100
+ 5079 × 7000 what gives us 35553000

= 40581210
