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:
tyler an animal rights advocate decided to build his own animal sanctuary to protect different animals from poachers . the sanctuary was divided into different regions . the first region to be built was a bird sanctuary . initially he had 29 endangered bird species on that region . if each species has 7 pairs of birds how many pairs does he have in total ?

Ex Output:
203

Ex Input:
adam earned 9 dollars for each lawn he mowed . if he had 12 lawns to mow but forgot to mow 8 of them how much money did he actually earn ?

Ex Output:
36

Ex Input:
the store has cd 's and dvd 's that you need . how many packs of dvd 's can you buy with 132 dollars if 1 pack costs 12 dollars ?

Ex Output:
11