Alright, let's work through 8647 times 9681 step by step
8647 × 9681 = 9681 × (8647)
+ 9681 × 7 that equals 67767
+ 9681 × 40 that equals 387240
+ 9681 × 600 that results in 5808600
+ 9681 × 8000 producing 77448000

= 83711607
