Given a math word problem, answer the following question. You might need to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the question and then only report the final numerical answer.

Ex Input:
frannie and meg are in a jump rope contest . frannie jumped 53 times without missing . she jumped 18 fewer times than meg . how many times did meg jump ?

Ex Output:
71

Ex Input:
if the cave is 974 feet deep and they are already at 588 feet how much farther until they reach the end of the cave ?

Ex Output:
386

Ex Input:
a lawn care company bought 4 lawnmower blade for $ 8 each . they also bought a spool of weed eater string for $ 7 . how much money did they spend on supplies ?

Ex Output:
39