The fraction 18/91 is equal to 19.78% when converted to a percentage and rounded to two decimal places. This percentage represents the portion of 18 parts out of a total of 91 parts. It's a relatively small percentage, falling below the quarter mark of 25%.
In practical terms, if you had a group of 91 items and selected 18 of them, you'd be choosing about one-fifth of the total. This fraction could be useful in various real-world scenarios, such as calculating probabilities, determining portions of a whole, or expressing ratios in fields like statistics or finance.