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:
Sara picked 6 pears and Tim picked 5 pears from the pear tree . How many pears were picked in total ?

Ex Output:
11

Ex Input:
Elisa has 37 dollars . How many more dollars does she have to earn to have 53 dollars ?

Ex Output:
16

Ex Input:
Kaleen filled a bucket with 0.75 gallon of water . A few minutes later , she realized only 0.5 gallon of water remained . How much water had leaked out of the bucket ?

Ex Output:
0.25