Alright, let's work through 8607 times 6647 step by step
8607 × 6647 = 6647 × (8607)
+ 6647 × 7 that equals 46529
+ 6647 × 00 resulting in 0
+ 6647 × 600 resulting in 3988200
+ 6647 × 8000 which equals 53176000

= 57210729
