To find out what number 6 is 15% of, you can use the following formula:
Number = (Part / Percentage) * 100
Here, the Part is 6, and the Percentage is 15%.
Plugging in the values:
Number = (6 / 15) * 100
Number = 0.4 * 100
Number = 40
So, 6 is 15% of 40.