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

Ex Output:
76

Ex Input:
Dave had to wash 29 short sleeve shirts and 11 long sleeve shirts before school . If he had only washed 35 of them by the time school started , how many did he not wash ?

Ex Output:
5

Ex Input:
Sara has 3 green and 5 red marbles . Tom has 4 green marbles . How many green marbles do they have in total ?

Ex Output:
7