The program Calculator-7 offers you the following possibilities: * calculate using seven operation: addition, subtraction, multiply, divide, percent, square root, 1 divide to X; * calculate total from clipboard (copy data to clipboard from table or text and press one button); * set decimal position (0, 2, 3, float) and round type (up, mathematical, down); * customize an appearance of work window: scale, fonts for digital panel and buttons, background color; * customize an appearance of number in digital panel: leading zero for decimal, thousand separator, decimal separator, digit grouping.