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]: 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

[EX Q]: During 1 year , the Wagners ' real estate bill included 600 dollars for local schools . Of this amount , 150 dollars went to the high school district . What percent did the Wagner family pay to the high school district ?
[EX A]: 25

[EX Q]: Dave had to wash 9 short sleeve shirts and 27 long sleeve shirts before school . If he had only washed 20 of them by the time school started , how many did he not wash ?
[EX A]:
16