Alright, let's work through 8220 times 3504 step by step
8220 × 3504 = 3504 × (8220)
+ 3504 × 0 resulting in 0
+ 3504 × 20 resulting in 70080
+ 3504 × 200 yielding 700800
+ 3504 × 8000 that equals 28032000

= 28802880
