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

Ex Input:
Problem: you enter a weight loss challenge game and manage to lose 13 % of your body weight . for the final weigh in you are forced to wear clothes that add 2 % to your weight . what percentage of weight loss is measured at the final weigh in ?

Ex Output:
11.26 %


Ex Input:
Problem: what is the sum of the odd integers from 55 to 75 , inclusive ?

Ex Output:
71


Ex Input:
Problem: some of 45 % - intensity red paint is replaced with 25 % solution of red paint such that the new paint intensity is 40 % . what fraction of the original paint was replaced ?

Ex Output:

1 / 4