Alright, let's work through 8662 times 1591 step by step
8662 × 1591 = 1591 × (8662)
+ 1591 × 2 giving us 3182
+ 1591 × 60 yielding 95460
+ 1591 × 600 that equals 954600
+ 1591 × 8000 which equals 12728000

= 13781242
