👉 In mathematics, a "fifteen" is a number that represents 1/15 of another number. For example: - The value of \( \frac{1}{15} \) when you divide any whole number by 15 is \( \frac{1}{15} \). - The value of \( \frac{1}{150} \) when you divide any whole number by 150 is also \( \frac{1}{1