What does 12 represent in this equation.​

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.

I'm confused on this could anyone me and show me what i need to do to solve it.