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:
Dave was helping the cafeteria workers pick up lunch trays , but he could only carry 9 trays at a time . If he had to pick up 17 trays from one table and 55 trays from another , how many trips will he make ?

Ex Output:
8


Ex Input:
A home purchased for 300000 dollars depreciated 8 % over a 1-year period . What was the value of the home after at the end of the year , in dollars ?

Ex Output:
276000


Ex Input:
Roger is at the library helping put away books . There are 14 book to put away total but a librarian takes 2 of them and leaves Roger with the rest . If he can fit 3 books on a shelf , how many shelves will he need ?

Ex Output:

4