Calculator a+2

Calculator a+2 is designed to calculate math correct as possible with easy UI functionalities. Symbols a, b, c, x, y, z can be used in any calculations. Results can be given as fraction or decimals. For example: 1-2/3 = 1/3 or 0. 3333333. But the Calculator a+2 can do much more complicated calculations. Pi is calculated as symbol and can be also include in fraction result.