Alright, let's work through 6240 times 2650 step by step
6240 × 2650 = 2650 × (6240)
+ 2650 × 0 producing 0
+ 2650 × 40 producing 106000
+ 2650 × 200 which equals 530000
+ 2650 × 6000 that results in 15900000

= 16536000
