You are given a math word problem and you are supposed to apply a single mathematical operator 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:
sarah could send 10 text messages a day . if she sent 8 how many text messages does she have left she can send ?

Ex Output:
2

Ex Input:
jane 's mom picked cherry tomatoes from their backyard . if she gathered 56 cherry tomatoes and is about to place them in small jars which can contain 8 cherry tomatoes at a time how many jars will she need ?

Ex Output:
7

Ex Input:
emily 's mom was buying extra school supplies for emily and her sister . she bought 13 packs of glue sticks total . if she gave emily 6 packs how many did her sister get ?

Ex Output:
7