Alright, let's work through 8691 times 8321 step by step
8691 × 8321 = 8321 × (8691)
+ 8321 × 1 resulting in 8321
+ 8321 × 90 that is equal 748890
+ 8321 × 600 producing 4992600
+ 8321 × 8000 producing 66568000

= 72317811
