You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

[EX Q]: 532 people are watching a movie in a theater . The theater has 750 seats . How many seats are empty in the theater ?
[EX A]: 218

[EX Q]: 0.5 the students in the band are in the trumpet section . 0.125 the students in the band are in the trombone section . What fraction of the students in the band are in either the trumpet section or the trombone section ?
[EX A]: 0.625

[EX Q]: At Mrs. Hilt 's house , there was 29 inches of snow , and Brecknock Elementary School received 17 inches of snow . How much more snow did Mrs. Hilt 's house have ?
[EX A]:
12