Alright, let's work through 2640 times 4034 step by step
2640 × 4034 = 4034 × (2640)
+ 4034 × 0 which equals 0
+ 4034 × 40 resulting in 161360
+ 4034 × 600 what gives us 2420400
+ 4034 × 2000 that equals 8068000

= 10649760
