Alright, let's work through 8147 times 9091 step by step
8147 × 9091 = 9091 × (8147)
+ 9091 × 7 producing 63637
+ 9091 × 40 that is equal 363640
+ 9091 × 100 producing 909100
+ 9091 × 8000 giving us 72728000

= 74064377
