An obelus is a symbol consisting of a short horizontal line with a dot above and below, often used to represent the mathematical operation of division.
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obelus
A division sign is called an obelius.
To quarter a number with a calculator, you simply divide the number by 4. For example, to quarter the number 20, you would enter "20 ÷ 4" into the calculator, which equals 5. This process divides the number into four equal parts, each representing one-quarter of the original number.