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.
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Question: 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 ?

Answer: 71

Question: molly had 14 candles on her birthday cake . she grew older and got 6 more on her birthday cake . how old is molly now ?

Answer: 20

Question: a waiter had 18 customers . if 6 left how many customers would the waiter still have ?

Answer:
12