You are given a math word problem and you are supposed to apply multiplication or division mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Example Input: Vincent bought 10 books about animals , 1 book about outer space , and 3 books about trains . Each book cost $ 16 . How much did Vincent spend on the books ?
Example Output: 224

Example Input: Jane ' s dad brought home 24 marble potatoes . If Jane ' s mom made potato salad for lunch and served an equal amount of potatoes to Jane , herself and her husband , how many potatoes did each of them have ?
Example Output: 8

Example Input: A new building needed 9 windows . The builder had already installed 6 of them . If it takes 6 hours to install each window , how long will it take him to install the rest ?
Example Output:
18