Calculates GST, the Australian 'Goods and Services Tax', which sits at 10%. Saying yes to Scratch Cat (or anything with yes) will make him assume your price had tax to begin with, and saying no to Scratch Cat (or anything with no in it) will make him assume your price needs to have the GST added to it. Oh yeah. This rounds to 2 decimal places, the maximum payable by modern currency. #GST #calculator
