Alright, let's work through 6783 times 2540 step by step
6783 × 2540 = 2540 × (6783)
+ 2540 × 3 producing 7620
+ 2540 × 80 what gives us 203200
+ 2540 × 700 what gives us 1778000
+ 2540 × 6000 producing 15240000

= 17228820
