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:
Bruce has 75 eggs . Kimberly has 17 eggs . He loses 70 . How many eggs will Bruce have ?

Ex Output:
5


Ex Input:
Jacqueline has 4 boxes of erasers . Each box holds 10 erasers and there are 9 boxes in a case . How many erasers does Jacqueline have ?

Ex Output:
40


Ex Input:
Shelby ’ s teacher gives out gold stars for great math work . Yesterday , Shelby earned 4 gold stars . Today , she earned 3 more . How many gold stars did Shelby earn in all ?

Ex Output:

7