Alright, let's work through 4992 times 904 step by step
4992 × 904 = 904 × (4992)
+ 904 × 2 that is equal 1808
+ 904 × 90 giving us 81360
+ 904 × 900 yielding 813600
+ 904 × 4000 yielding 3616000

= 4512768
