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

[EX Q]: Problem: 90 % of the population of a village is 36000 . the total population of the village is ?
[EX A]: 4000

[EX Q]: Problem: last year elaine spent 20 % of her annual earnings on rent . this year she earned 35 % more than last year and she spent 30 % of her annual earnings on rent . the amount she spent on rent this year is what percent of the amount spent on rent last year ?
[EX A]: 202.5

[EX Q]: Problem: if p is the product of the integers from 1 to 36 , inclusive , what is the greatest integer k for which 3 ^ k is a factor of p ?
[EX A]:
17