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:
5 boats are in the lake . each boat has 3 people . how many people are on boats in the lake ?

Ex Output:
15

Ex Input:
bryan took a look at his books as well . if he has 56 books in each of his 9 bookshelves how many books does he have in total ?

Ex Output:
504

Ex Input:
a florist needed to use 2 pounds of fertilizer for 9 days and then on the final day use the normal amount plus another 4 pounds . how many pounds of fertilizer will she use all together ?

Ex Output:
22