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 Q]: Arthur removes 4 pencils from a jar . There were originally 87 pencils in the jar . How many pencils are left in the jar ?
[EX A]: 83

[EX Q]: There are 2 bananas in a pile on the desk . Each banana comes in a package of 13 . 7 bananas are added to the pile . How many bananas are there in the pile ?
[EX A]: 9

[EX Q]: Lana 's favorite band was holding a concert where tickets were 6 dollars each . Lana bought 8 tickets for herself and her friends and 2 extra tickets in case anyone else wanted to go . How much did she spend ?
[EX A]:
60