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]: There are 69 erasers in a box . Jane has 15 erasers in a bag . Doris takes 54 erasers out of the box . How many erasers are left in the box ?
[EX A]: 15

[EX Q]: There are 8 apples in a pile on the desk . Each apple comes in a package of 11 . 5 apples are added to the pile . How many apples are there in the pile ?
[EX A]: 13

[EX Q]: Michelle has 2 crayons . Janet has 2 crayons . If Janet gives all of her crayons to Michelle , how many crayons will Michelle have ?
[EX A]:
4