出掛け

My third day in Istanbul, my first going-out-of-house.

I gave the taxi driver 50TL(5000¥) instead of 5TL(500¥) and walked away. He didn't tell anything...

(><,) 

I can't find any reason to it. Culture shock? They reprinted Turkish money on a different size, that's why? That was my first time お金を間違えるのは。