In mathematics there are multiple different ways to represent division. The obelus is often used in elementary mathematics, then later the horizontal bar is adopted for convenience, and the forward slash is used because of the prevelence of computers and calculators.
This site usually represents division using a horizontal bar that forms a fraction with a numerator and denominator.
A fraction is represented using a horizontal bar between two expressions. The expression on top is called the numerator and the expression on bottom is called the denominator.
When entering an equation into a calculator or the computer the forward slash is used to represent division.
Division is the process of dividing a number into equal parts.