Alright, let's work through 8440 times 9107 step by step
8440 × 9107 = 9107 × (8440)
+ 9107 × 0 that is equal 0
+ 9107 × 40 what gives us 364280
+ 9107 × 400 yielding 3642800
+ 9107 × 8000 that is equal 72856000

= 76863080
