Alright, let's work through 3801 times 4389 step by step
3801 × 4389 = 4389 × (3801)
+ 4389 × 1 resulting in 4389
+ 4389 × 00 producing 0
+ 4389 × 800 that is equal 3511200
+ 4389 × 3000 yielding 13167000

= 16682589
