Alright, let's work through 8004 times 3915 step by step
8004 × 3915 = 3915 × (8004)
+ 3915 × 4 yielding 15660
+ 3915 × 00 giving us 0
+ 3915 × 000 that results in 0
+ 3915 × 8000 resulting in 31320000

= 31335660
