You are given a math word problem and you are supposed to apply a single mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report final the numerical answer.
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Question: While making desserts for a bake sale , Victor used 0.625 scoop of brown sugar as well as 0.25 scoop of white sugar . How much more brown sugar did Victor use ?

Answer: 0.375

Question: If Joan bicycled 25 miles at 5 miles per hour , how long was Joan travelling ?

Answer: 5

Question: Joan decided to sell all of her old books . She gathered up 33 books to sell . She sold 26 books in a yard sale . How many books does Joan now have ?

Answer:
7