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:
The schools debate team had 11 boys and 45 girls on it . If they were split into groups of 7 how many groups could they make ?

Ex Output:
8


Ex Input:
Carol and her mom were picking carrots from their garden . Carol picked 29 and her mother picked 16 . If only 38 of the carrots were good , how many bad carrots did they have ?

Ex Output:
7


Ex Input:
Joan has 9 blue balloons , Sally has 5 blue balloons , and Jessica has 2 blue balloons . How many blue balloons do they have in total ?

Ex Output:

16