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

Ex Input:
Problem: if an investor puts $ 800 in a savings account that earns 10 percent annual interest compounded semiannually , how much money will be in the account after one year ?

Ex Output:
$ 882


Ex Input:
Problem: the mean daily profit made by a shopkeeper in a month of 30 days was rs . 350 . if the mean profit for the first fifteen days was rs . 255 , then the mean profit for the last 15 days would be

Ex Output:
rs . 445


Ex Input:
Problem: a cycle is bought for rs . 900 and sold for rs . 1080 , find the gain percent ?

Ex Output:

20 %