Alright, let's work through 3869 times 111 step by step
3869 × 111 = 111 × (3869)
+ 111 × 9 which equals 999
+ 111 × 60 which equals 6660
+ 111 × 800 which equals 88800
+ 111 × 3000 that is equal 333000

= 429459
