Alright, let's work through 2678 times 8430 step by step
2678 × 8430 = 8430 × (2678)
+ 8430 × 8 which equals 67440
+ 8430 × 70 resulting in 590100
+ 8430 × 600 producing 5058000
+ 8430 × 2000 yielding 16860000

= 22575540
