Alright, let's work through 8155 times 9681 step by step
8155 × 9681 = 9681 × (8155)
+ 9681 × 5 resulting in 48405
+ 9681 × 50 that is equal 484050
+ 9681 × 100 which equals 968100
+ 9681 × 8000 that equals 77448000

= 78948555
