Alright, let's work through 2838 times 8140 step by step
2838 × 8140 = 8140 × (2838)
+ 8140 × 8 resulting in 65120
+ 8140 × 30 resulting in 244200
+ 8140 × 800 producing 6512000
+ 8140 × 2000 yielding 16280000

= 23101320
