Alright, let's work through 3840 times 555 step by step
3840 × 555 = 555 × (3840)
+ 555 × 0 that results in 0
+ 555 × 40 resulting in 22200
+ 555 × 800 which equals 444000
+ 555 × 3000 that results in 1665000

= 2131200
