During cleaning and sanitizing the dish, the dish must be rinsed. This is to be done so as to remove the dirt and attached food particles. This is an important part of the cleaning procedure and sanitization.
I don't really understand what you're asking, but say you have the number 67,to find 23% of that number, you would multiply 67 by .23, you will then get whatever 23% of 67 is.
