cash register calculator game

supermarket cash register game, lets you to pay for groceries list.
cashier enter the correct sum of the items.
give the customer the right calculation, run the cash register.
solve simple exercises in math to get the shopping sum.
use coins to pay money in the vending machine.
solve puzzle to unlock new level.
quickly! serve customers within time limit.
collect points to unlock the new levels.

features:

- cash register.
- serve customers in given time
- easy.
- full use for free.