Alright, let's work through 6440 times 1165 step by step
6440 × 1165 = 1165 × (6440)
+ 1165 × 0 resulting in 0
+ 1165 × 40 yielding 46600
+ 1165 × 400 yielding 466000
+ 1165 × 6000 that is equal 6990000

= 7502600
