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:
At a restaurant each adult meal costs $ 7 and kids eat free . If a group of 13 people came in and 9 were kids , how much would it cost for the group to eat ?

Ex Output:
28


Ex Input:
How many yards of material from a 24 yard length of cloth remains after 3 pieces each 3.5 yards long and 5 pieces each 2.25 long are removed ?

Ex Output:
2.25


Ex Input:
Carol was playing a trivia game . In the first round she scored 17 points and in the second round she scored 6 points . In the last round she lost 16 points . How many points did she have at the end of the game ?

Ex Output:

7