Alright, let's work through 8256 times 9640 step by step
8256 × 9640 = 9640 × (8256)
+ 9640 × 6 resulting in 57840
+ 9640 × 50 giving us 482000
+ 9640 × 200 that is equal 1928000
+ 9640 × 8000 what gives us 77120000

= 79587840
