Alright, let's work through 8647 times 1791 step by step
8647 × 1791 = 1791 × (8647)
+ 1791 × 7 yielding 12537
+ 1791 × 40 which equals 71640
+ 1791 × 600 that is equal 1074600
+ 1791 × 8000 that equals 14328000

= 15486777
