260/520 = 50%
A fraction like 260/520 represents 50%, or half of a whole. You might see this in everyday life when half the students in a class are present, half of a pizza is left, or a store offers a half-price sale.
To picture 260/520 quickly, imagine a circle, shelf, or group split into two equal parts. One part is the amount being described, so you can estimate it as “about half” without focusing on the exact numbers.
A common point of confusion is thinking that 260/520 is a large amount because both numbers are fairly big. The size of the numbers does not matter as much as their relationship: the top number is exactly half of the bottom number.