Alright, let's work through 3963 times 8484 step by step
3963 × 8484 = 8484 × (3963)
+ 8484 × 3 yielding 25452
+ 8484 × 60 yielding 509040
+ 8484 × 900 which equals 7635600
+ 8484 × 3000 giving us 25452000

= 33622092
