Alright, let's work through 2678 times 6423 step by step
2678 × 6423 = 6423 × (2678)
+ 6423 × 8 producing 51384
+ 6423 × 70 which equals 449610
+ 6423 × 600 which equals 3853800
+ 6423 × 2000 what gives us 12846000

= 17200794
