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:
If there are 7 bottle caps in a box and Linda puts 7 more bottle caps inside , how many bottle caps are in the box ?

Ex Output:
14


Ex Input:
Tim had 50 cents . He paid 45 cents for a candy bar . How much change will he get ?

Ex Output:
5


Ex Input:
Roger has 92 blocks . 2 are eaten by a hippopotamus . How many blocks will Roger have ?

Ex Output:

90