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It required for mathematical operations like: calculator for addition, calculator for subtraction, calculator for multiplication, calculator for division. This is a simplified version of the online calculator.
How to use
You can use the [Enter] key to enter the equal character.
To delete the last character, press the Backspace key.
To enter a plus sign, use the [ + ] key at the top or on the side numeric keypad.
To enter a minus sign, use the [ – ] key at the top or on the side numeric keypad.
Use the [ * ] key on the side numeric keypad to enter the multiplication sign.
Use the [ / ] key on the side numeric keypad to enter the division sign.
You can use the [Esc] and [Del] keys on top of the keyboard, or the [End] key on the side numeric keypad to reset the calculator.