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:
john is building a tree house to serve as his hideout whenever he wanted to spend some time alone with himself . the first thing he did is to gather some materials . for the pillars he needs 2 sets of wood with different lengths . if the first set of wood is 4 feet long and the second set is 5 times longer than the first set how long is the second set of wood ?

Ex Output:
20


Ex Input:
allen shiela 's brother likes to play with blocks . shiela repainted allen 's old blocks in different colors . if allen has 49 identical blocks and there are 7 blocks for every color of paint used how many colors did shiela use ?

Ex Output:
7


Ex Input:
dennis has 4028 pencils stored in boxes . if the are 53 boxes how many pencils must go in each box ?

Ex Output:

76