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.

Ex Input:
Alyssa 's dog had puppies . She gave 7 to her friends . She now has 5 puppies . How many puppies did she have to start with ?

Ex Output:
12


Ex Input:
I have a pet golden retriever . Each year he gains 11 pounds . He is 8 years old . How many pounds does he weigh ?

Ex Output:
88


Ex Input:
There are 4 marbles . 7 marbles more are added . How many are there total ?

Ex Output:

11