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]: I need to figure out how to get the amount from a phone bill sent to Boston on June 16 . The Rate for First Minute is 0.4698 , the Rate for Additional Minutes is 0.374 , and the Total Minutes are 17 . How much is the bill ?
[EX A]: 6.45

[EX Q]: Mary picked 122 oranges and Jason picked 105 oranges from the orange tree . How many oranges were picked in total ?
[EX A]: 227

[EX Q]: Billy was putting his spare change into piles . He had 2 piles of quarters and 3 piles of dimes . If each pile had 4 coins in it , how many coins did he have total ?
[EX A]:
20