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

[EX Q]: 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 A]: 11.26 %

[EX Q]: Problem: a statue is being carved by a sculptor . the original piece of marble weighed 180 kg . in the first week 28 percent is cut away . in the second week 18 percent of the remainder is cut away . in the third week the statue is completed when 20 percent of the remainder is cut away . what is the weight of the final statue ?
[EX A]: 85 kg

[EX Q]: Problem: how many times digit 5 is used while writing numbers from 1 to 500 ?
[EX A]:
10