Alright, let's work through 5089 times 3581 step by step
5089 × 3581 = 3581 × (5089)
+ 3581 × 9 yielding 32229
+ 3581 × 80 which equals 286480
+ 3581 × 000 what gives us 0
+ 3581 × 5000 giving us 17905000

= 18223709
