Alright, let's work through 3534 times 2640 step by step
3534 × 2640 = 2640 × (3534)
+ 2640 × 4 yielding 10560
+ 2640 × 30 giving us 79200
+ 2640 × 500 producing 1320000
+ 2640 × 3000 which equals 7920000

= 9329760
