Alright, let's work through 8191 times 4917 step by step
8191 × 4917 = 4917 × (8191)
+ 4917 × 1 giving us 4917
+ 4917 × 90 that equals 442530
+ 4917 × 100 that is equal 491700
+ 4917 × 8000 that is equal 39336000

= 40275147
