Alright, let's work through 7990 times 2552 step by step
7990 × 2552 = 2552 × (7990)
+ 2552 × 0 resulting in 0
+ 2552 × 90 which equals 229680
+ 2552 × 900 resulting in 2296800
+ 2552 × 7000 yielding 17864000

= 20390480
