Alright, let's work through 8899 times 8641 step by step
8899 × 8641 = 8641 × (8899)
+ 8641 × 9 resulting in 77769
+ 8641 × 90 that results in 777690
+ 8641 × 800 resulting in 6912800
+ 8641 × 8000 that results in 69128000

= 76896259
