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.

Example Input: a group of 8 friends were dressing as pirates for halloween . if each costume cost 5 dollars how much did they spend ?
Example Output: 40

Example Input: a chef only had 3 apples so he ordered 2 more bags . if each bag has 9 apples how many apples does he have total ?
Example Output: 21

Example Input: michelle likes to save money every now and then so that she has money to buy the things that she wants . 1 day she decided to count her savings . she opened her piggy bank and sorted out the different coins and dollar bills . if she counted a total of 20 nickels ( a nickel is equivalent to 5 cents ) what is the total value of money does she have in nickels ?
Example Output:
100