Give change (demo) v1.3

　　DEMO VERSION (3 currencies) - Don't shortchange yourself when you change currencies! Much more than a basic currency converter.You are a professional (taxis hotel restaurant tour guide…) : Do an exchange operation adding your own commission calculate the cash to be returned when receiving a payment in foreign currency.You are a tourist : Check the exchange commission used check the correct amount of change using foreign currency.Keywords : Give。