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: jenny and her family just moved into a new city and today would be her first day on a new school . she wanted to make sure that she is well rested so she made sure that she had 8 hours of sleep . if an hour is composed of 60 minutes how many minutes of sleep did she have ?
Example Output: 480

Example Input: debby bought 355 bottles of water when they were on sale . if she drank 5 bottles a day how many days would they last her ?
Example Output: 71

Example Input: christian 's father and the senior ranger gathered firewood as they walked towards the lake in the park and brought with them sacks . if every sack can contain around 20 pieces of wood how many sacks were they able to fill if they gathered 80 pieces of wood ?
Example Output:
4