Alright, let's work through 2540 times 3430 step by step
2540 × 3430 = 3430 × (2540)
+ 3430 × 0 yielding 0
+ 3430 × 40 what gives us 137200
+ 3430 × 500 yielding 1715000
+ 3430 × 2000 yielding 6860000

= 8712200
