Alright, let's work through 8485 times 8889 step by step
8485 × 8889 = 8889 × (8485)
+ 8889 × 5 that equals 44445
+ 8889 × 80 yielding 711120
+ 8889 × 400 producing 3555600
+ 8889 × 8000 producing 71112000

= 75423165
