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]: Mrs. Hilt saw 144 bees in the hive . The next day she saw 3 times that many . How many bees did she see on the second day ?
[A]: 432

[Q]: Fred has 5 baseball cards . Melanie bought 3 of Fred 's baseball cards . How many baseball cards does Fred have now ?
[A]: 2

[Q]: 14 birds were sitting in a tree . 21 more birds flew up to the tree . How many birds were there altogether in the tree ?
[A]:
35