Alright, let's work through 8689 times 3947 step by step
8689 × 3947 = 3947 × (8689)
+ 3947 × 9 yielding 35523
+ 3947 × 80 that is equal 315760
+ 3947 × 600 resulting in 2368200
+ 3947 × 8000 that results in 31576000

= 34295483
