18/42 = ≈42.86%
Rounded to 2 decimal places.
A value like 18/42, or about 42.86%, might describe how many students in a class ride the bus or how many items in a batch are a certain color. It shows up whenever you compare part of a group with the whole group.
To picture it quickly, think of a little less than half. If you imagine 42 items split into two equal groups, 18 is a few items short of one group.
A common mix-up is treating 18/42 as if it means 18 percent because 18 is the top number. The percentage describes how large 18 is compared with all 42, not the numerator by itself.