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.

[EX Q]: Ned was trying to expand his game collection . He bought 50 games from a friend and bought 27 more at a garage sale . If 74 of the games did n't work , how many good games did he end up with ?
[EX A]: 3

[EX Q]: For Halloween Megan received 11 pieces of candy from neighbors and 5 pieces from her older sister . If she only ate 8 pieces a day , how long would the candy last her ?
[EX A]: 2

[EX Q]: Zoe had 15 songs on her mp3 player . If she deleted 8 old songs from it and then added 50 new songs , how many songs does she have on her mp3 player ?
[EX A]:
57