Alright, let's work through 1289 times 8509 step by step
1289 × 8509 = 8509 × (1289)
+ 8509 × 9 producing 76581
+ 8509 × 80 giving us 680720
+ 8509 × 200 yielding 1701800
+ 8509 × 1000 resulting in 8509000

= 10968101
