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                    The four basic operations

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                    Basic operations
                    Addition
                    Subtraction
                    Multiplication
                    Division

                    You can use multiple symbols for multiplication: * asterisk, · middle dot, the one in the menu, and also space. That's it; a space between variables or numbers is an implicit multiplication. The * asterisk is automatically converted to a nicer middle dot ·. About division, apart from the symbol in the menu, you can also use / slash and, of course, the fraction symbol.

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