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

Ex Input:
A pet store had 41 siamese cats and 28 house cats . During a sale they sold 15 cats . How many cats do they have left ?

Ex Output:
54


Ex Input:
Nancy , Melanie , Mary , and Alyssa each bought 540 baseball cards , which come in packs of 20 . How many packs of baseball cards do they have in all ?

Ex Output:
108


Ex Input:
A pet shelter had 3 puppies when another 3 were brought in . If 3 puppies a day are adopted , how long would it take for all of them to be adopted ?

Ex Output:

2