Alright, let's work through 2089 times 5421 step by step
2089 × 5421 = 5421 × (2089)
+ 5421 × 9 which equals 48789
+ 5421 × 80 producing 433680
+ 5421 × 000 that is equal 0
+ 5421 × 2000 that is equal 10842000

= 11324469
