Alright, let's work through 6648 times 6604 step by step
6648 × 6604 = 6604 × (6648)
+ 6604 × 8 yielding 52832
+ 6604 × 40 resulting in 264160
+ 6604 × 600 yielding 3962400
+ 6604 × 6000 producing 39624000

= 43903392
