The task is to generate the correct answer for a given math problem.

Ex Input:
Problem: during a certain two - week period , 60 percent of the movies rented from a video store were comedies , and of the remaining movies rented , there were 3 times as many dramas as action movies . if no other movies were rented during that two - week period and there were a action movies rented , then how many comedies , in terms of a , were rented during that two - week period ?

Ex Output:
6 a

Ex Input:
Problem: how many multiples of 7 are there between 10 and 100 ( both are inclusive ) ?

Ex Output:
13

Ex Input:
Problem: 8 people went to a restaurant for dinner . 7 of them spent $ 10 each on their meals and the eighth spent $ 7 more than the average expenditure of all 8 people . what was the total amount of money that the 8 people spent ?

Ex Output:
$ 88