You are given a math word problem and you are supposed to apply a single mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report final the numerical answer.

Example Input: Joan has 8 orange balloons but lost 2 of them . How many orange balloons does Joan have now ?
Example Output: 6

Example Input: There are 6 birds and 3 nests . How many more birds are there than nests ?
Example Output: 3

Example Input: There were 28 bales of hay in the barn . Tim stacked bales in the barn today . There are now 54 bales of hay in the barn . How many bales did he store in the barn ?
Example Output:
26