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:
Isabella ’ s hair is 18 cubes long . If her hair grows 4 more inches , how long will it be ?

Ex Output:
22


Ex Input:
Cade had 87 marbles . He gave 8 to Dylan . How many does he have left ?

Ex Output:
79


Ex Input:
As part of a lesson on earthquakes , a science class is researching the movement of a nearby fault line . The fault line moved 1.25 inches during the past year and 5.25 inches the year before . How far did the fault line move in all ?

Ex Output:

6.5