TASK DEFINITION: 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.
PROBLEM: At the hardware store , 0.25 the nails are size 2d and 0.5 the nails are size 4d . What fraction of the nails are either size 2d or 4d ?

SOLUTION: 0.75

PROBLEM: Mika had 20 stickers . She bought 26 stickers from a store in the mall and got 20 stickers for her birthday . Then Mika gave 6 of the stickers to her sister and used 58 to decorate a greeting card . How many stickers does Mika have left ?

SOLUTION: 2

PROBLEM: 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 ?

SOLUTION:
2