Calculator

This is a simple calculator.

- It supports a mini calculator on any screen.

- It supports arithmetic expressions such as +, -, x, ÷, /, (, ).

- It supports percent operation and memory buttons.

- It supports a scientific calculator.

- It supports digit grouping separator(comma, space, Apostrophe)

- It supports digit grouping method (987,654,321.012 or 9,8765,4321.012 or 98,76,54,321.012)

- It supports the calculation history.

- EvalEx Calculator : Calculate by entering variables and formulas

```

Revenue = 120,000

Cost = 70,000

Profit = Revenue - Cost

Tax = Profit * 0.1

NetProfit = Profit - Tax

```

[Percent operation]

100x3%=3 (3% of 100)

[Memory buttons]

M+ : memory + result

M- : memory - result

MR : memory return

MC : memory clear

MS : memory set

[Clear button]

C : clear

AC : all clear (clear result and memory)

[Scientific Calculator]