Alright, let's work through 8591 times 989 step by step
8591 × 989 = 989 × (8591)
+ 989 × 1 yielding 989
+ 989 × 90 yielding 89010
+ 989 × 500 giving us 494500
+ 989 × 8000 giving us 7912000

= 8496499
