Definition: You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
Input: next on her list are the homeless people where she spent a total of $ 900 . if she gave $ 325 to the first set of homeless families and $ 260 to the second set of families how much did she give to the last set of homeless families ?
Output:
315