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.

[Q]: Heather weighs 87 pounds . Emily weighs 9 pounds . Elizabeth weighs 8 pounds . How much heavier is Heather than Emily ?
[A]: 78


[Q]: A pet shelter had 17 puppies when another 55 were brought in . If 8 puppies a day are adopted , how long would it take for all of them to be adopted ?
[A]: 9


[Q]: There were originally 20817 houses in Lincoln County . During a housing boom , developers built 97741 . How many houses are there now in Lincoln County ?
[A]:
118558