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]