Alright, let's work through 7992 times 5504 step by step
7992 × 5504 = 5504 × (7992)
+ 5504 × 2 producing 11008
+ 5504 × 90 that results in 495360
+ 5504 × 900 yielding 4953600
+ 5504 × 7000 yielding 38528000

= 43987968
