Alright, let's work through 8691 times 2108 step by step
8691 × 2108 = 2108 × (8691)
+ 2108 × 1 producing 2108
+ 2108 × 90 resulting in 189720
+ 2108 × 600 that results in 1264800
+ 2108 × 8000 giving us 16864000

= 18320628
