Alright, let's work through 4649 times 4480 step by step
4649 × 4480 = 4480 × (4649)
+ 4480 × 9 that equals 40320
+ 4480 × 40 which equals 179200
+ 4480 × 600 resulting in 2688000
+ 4480 × 4000 which equals 17920000

= 20827520
