We're going to solve 6440 multiplied by 2566
6440 × 2566 = 2566 × (6440)
+ 2566 × 0 what gives us 0
+ 2566 × 40 that is equal 102640
+ 2566 × 400 yielding 1026400
+ 2566 × 6000 that results in 15396000

= 16525040
