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:
At the arcade Jerry won 4 tickets . If he spent 2 tickets on a beanie and later won 47 more tickets , how many would he have ?

Ex Output:
49


Ex Input:
A pet store had 18 puppies . In one day they sold 3 of them and put the rest into cages with 5 in each cage . How many cages did they use ?

Ex Output:
3


Ex Input:
In one year , for the election for president there were 76.7 million voters , whereas in the next year there were 129.9 million voters . Find the percentage change in the number of voters ?

Ex Output:

69.4