Counting money

Counting money - i think it is not strange to us daily, but do you often count cash? How much do you it as your counted maximum value one time? And which kind of currency do you know? How does its banknotes image look like?
With me, there are many questions...
When I see a cashier counts cash.. Wow.. She counts so fast with exactly result. Actually her counting skill is so great, I really admire her...
This game is come from a crazy idea (I think so…:)), though, I hope it can support you for check your counting skill, then you will enjoy it.
The game will be provided some kinds of currency banknotes for counting in random currency denominations in limited time (half or 1 minute only). Let try and know how much you can count!
* Notes:
Banknote images were collected from the internet; it is only used for reference as counting money denominations in purpose.
* How to play?
- It is so simple: you just choose the currency, and then... start to count by flipping the banknote image, and input to check your result.
- If your value is correct, you will get the score.
At the present, I think the application is not perfect so far, so I hope to get your comment (even bugs) to improve this game as complete as possible.
Thank you so much, hope you enjoy the game!