Alright, let's work through 5385 times 2678 step by step
5385 × 2678 = 2678 × (5385)
+ 2678 × 5 that is equal 13390
+ 2678 × 80 which equals 214240
+ 2678 × 300 what gives us 803400
+ 2678 × 5000 yielding 13390000

= 14421030
