52/80 = 65%
A value like 52/80, or 65%, could describe how many questions someone got right on a quiz or how much of a project they’ve finished. It’s a little less than two-thirds, so it suggests more than half but not quite a full two-thirds.
To picture it quickly, imagine 80 small squares with 52 shaded in. You’d see a bit more than half the squares filled, with 28 still unshaded.
One common point of confusion is treating 65% as exactly two-thirds, even though two-thirds is a little higher. Also, 52/80 describes a share of 80, so it doesn’t mean there are 52 items in every group.