Alright, let's work through 3540 times 6699 step by step
3540 × 6699 = 6699 × (3540)
+ 6699 × 0 producing 0
+ 6699 × 40 which equals 267960
+ 6699 × 500 producing 3349500
+ 6699 × 3000 producing 20097000

= 23714460
