Alright, let's work through 3840 times 5871 step by step
3840 × 5871 = 5871 × (3840)
+ 5871 × 0 what gives us 0
+ 5871 × 40 producing 234840
+ 5871 × 800 which equals 4696800
+ 5871 × 3000 giving us 17613000

= 22544640
