Simple Calculator - Fothong APKをダウンロード

Nice, but it lacks one thing: If you're trying to calculate a tip (for example), and you type "20+15%", it shows the total as "20.15". (Obviously that's not right.) For the correct result, you must type "20.00*115%" (as 115% = the original amount plus 15% of it). The characters on the "keys" could also be larger, at least as an option. Maybe these can be improved.