You are given a math word problem and you are supposed to apply a single mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report final the numerical answer.

[Q]: Melanie had 30 baseball cards , and 9 were torn . Sara bought 18 of Melanie 's baseball cards . How many baseball cards does Melanie have now ?
[A]: 12


[Q]: Jesse ’ s room is 12 feet long and 8 feet wide . How much carpet does she need to cover the whole floor ?
[A]: 96


[Q]: Molly had 14 candles on her birthday cake . She grew older and got 6 more on her birthday cake . How old is Molly now ?
[A]:
20