Alright, let's work through 3400 times 4109 step by step
3400 × 4109 = 4109 × (3400)
+ 4109 × 0 yielding 0
+ 4109 × 00 producing 0
+ 4109 × 400 producing 1643600
+ 4109 × 3000 giving us 12327000

= 13970600
