Alright, let's work through 8499 times 7959 step by step
8499 × 7959 = 7959 × (8499)
+ 7959 × 9 giving us 71631
+ 7959 × 90 giving us 716310
+ 7959 × 400 producing 3183600
+ 7959 × 8000 producing 63672000

= 67643541
