Alright, let's work through 2540 times 3401 step by step
2540 × 3401 = 3401 × (2540)
+ 3401 × 0 yielding 0
+ 3401 × 40 that is equal 136040
+ 3401 × 500 what gives us 1700500
+ 3401 × 2000 that is equal 6802000

= 8638540
