Alright, let's work through 4089 times 3524 step by step
4089 × 3524 = 3524 × (4089)
+ 3524 × 9 that is equal 31716
+ 3524 × 80 that equals 281920
+ 3524 × 000 which equals 0
+ 3524 × 4000 that results in 14096000

= 14409636
