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 Input:
Charles has 25 Skittles . Diana takes 7 away . How many Skittles will Charles have ?

Ex Output:
18


Ex Input:
Sara had 21 quarters in her bank . Her dad gave her 49 quarters . How many quarters does she have now ?

Ex Output:
70


Ex Input:
There are 54 scissors in the drawer . Keith placed 22 scissors in the drawer . How many scissors are now there in all ?

Ex Output:

76