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.
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Question: Nancy has saved 1 dozen quarters from washing cars . How much money does Nancy have ?

Answer: 3


Question: Vanessa had 16 music files and 48 video files on her flash drive . If she deleted 30 of the files , how many files were still on her flash drive ?

Answer: 34


Question: Each chocolate bar in a box cost $ 2 . If a box had 13 bars total and Rachel sold all but 4 bars , how much money would she have made ?

Answer:
18