Alright, let's work through 8684 times 9997 step by step
8684 × 9997 = 9997 × (8684)
+ 9997 × 4 what gives us 39988
+ 9997 × 80 that equals 799760
+ 9997 × 600 that is equal 5998200
+ 9997 × 8000 yielding 79976000

= 86813948
