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.

[Q]: 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 ?
[A]: 34

[Q]: Ned had to wash 9 short sleeve shirts and 21 long sleeve shirts before school . If he had only washed 29 of them by the time school started , how many did he not wash ?
[A]: 1

[Q]: Donald has 4 oranges . He finds another 5 . How many oranges does Donald have in all ?
[A]:
9