Why does the division sign look like a fraction???

The division sign looks like a fraction because, essentially, a fraction is just another way of representing division; the horizontal line in a fraction acts as the division symbol, with the number above representing the numerator (number being divided) and the number below as the denominator (number dividing) - making the visual similarity very close.

The division sign, denoted by a horizontal line with dots or a slash (÷), often resembles a fraction due to its historical evolution. The modern division sign originated from the "pica" fraction bar, which was used in ancient Roman numerals to represent a fraction of a unit. Over time, the fraction bar evolved into a simplified horizontal line with dots or a slash, symbolizing the act of dividing one quantity by another. This design has been adopted universally as the standard division sign, retaining its fractional appearance as a visual representation of the division operation

tip - the top number is the numerator and the bottom number is the denominator