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.

[Q]: Amy had 4 music files and 21 video files on her flash drive . If she deleted 23 of the files , how many files were still on her flash drive ?
[A]: 2


[Q]: Emily bought 4 new chairs and 2 new tables for her house . If she spent 8 minutes on each piece furniture putting it together , how many minutes did it take her to finish ?
[A]: 48


[Q]: Tiffany had 6 pages of math homework and 4 pages of reading homework . If each page had 3 problems on it , how many problems did she have to complete total ?
[A]:
30