Alright, let's work through 9865 times 8128 step by step
9865 × 8128 = 8128 × (9865)
+ 8128 × 5 yielding 40640
+ 8128 × 60 that is equal 487680
+ 8128 × 800 resulting in 6502400
+ 8128 × 9000 producing 73152000

= 80182720
