Alright, let's work through 4639 times 2400 step by step
4639 × 2400 = 2400 × (4639)
+ 2400 × 9 which equals 21600
+ 2400 × 30 producing 72000
+ 2400 × 600 which equals 1440000
+ 2400 × 4000 resulting in 9600000

= 11133600
