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:
an architect was building a hotel downtown . he bought 147 lamps to put in the rooms . if each room gets 7 lamps how many rooms does the hotel have ?

Ex Output:
21


Ex Input:
my car gets 20 miles per gallon . how many miles can i drive on 5 gallons of gas ?

Ex Output:
100


Ex Input:
brenda 's mother made cookies for 5 . if she prepared 35 cookies and each of them had the same number of cookies how many did each of them have ?

Ex Output:

7