Alright, let's work through 8605 times 3647 step by step
8605 × 3647 = 3647 × (8605)
+ 3647 × 5 producing 18235
+ 3647 × 00 what gives us 0
+ 3647 × 600 which equals 2188200
+ 3647 × 8000 giving us 29176000

= 31382435
