Calculator PanecalST!

A simple calculator, the display of which indicates formulas and gives easy operation for editing. The calculator PanecalST includes features below: *Four arithmetic operations, root, percentages, and tax calculations *Calculations with parentheses *Memory, M+, M-, MR, MC *Scroll up/down lines *Easy editing by using a cursor operation *Cut, copy, and paste *Formulas history and answer history *Configurable grouping separator and decimal point Four arithmetic operations: 1 + 2 - 3 4 5 = 0.6 Square root: ( 2 2 ) = 2 Percentages: 500 + 20% = 600 500 - 20% = 400 500 20% = 100 100 500% = 20 Tax calculation: 500 Tax+= 525 525 Tax-= 500 Parentheses: ( 1 + 2 ) ( 3 + 4 ) = 21 ( 1 + 2 ) ( 3 + 4 ) ( 5 + 6 ) = 231 Grouping separator and decimal point: 123,456,789.1 + 0.02 = 123,456,789.12 123.456.789,1 + 0,02 = 123.456.789,12 (Depends on setting)