Alright, let's work through 8345 times 9664 step by step
8345 × 9664 = 9664 × (8345)
+ 9664 × 5 giving us 48320
+ 9664 × 40 producing 386560
+ 9664 × 300 that results in 2899200
+ 9664 × 8000 that is equal 77312000

= 80646080
