Alright, let's work through 2840 times 4608 step by step
2840 × 4608 = 4608 × (2840)
+ 4608 × 0 which equals 0
+ 4608 × 40 resulting in 184320
+ 4608 × 800 that is equal 3686400
+ 4608 × 2000 yielding 9216000

= 13086720
