Alright, let's work through 8689 times 9320 step by step
8689 × 9320 = 9320 × (8689)
+ 9320 × 9 that is equal 83880
+ 9320 × 80 resulting in 745600
+ 9320 × 600 what gives us 5592000
+ 9320 × 8000 yielding 74560000

= 80981480
