Alright, let's work through 2555 times 3945 step by step
2555 × 3945 = 3945 × (2555)
+ 3945 × 5 what gives us 19725
+ 3945 × 50 producing 197250
+ 3945 × 500 which equals 1972500
+ 3945 × 2000 that is equal 7890000

= 10079475
