Alright, let's work through 2840 times 7939 step by step
2840 × 7939 = 7939 × (2840)
+ 7939 × 0 that results in 0
+ 7939 × 40 what gives us 317560
+ 7939 × 800 producing 6351200
+ 7939 × 2000 resulting in 15878000

= 22546760
