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

Input: Consider Input: Problem: in a village of 2,500 people , 800 people are over 70 years old and 850 people are female . it is known that 40 percent of the females are younger than 70 years old . if no one in the village is 70 years old , what is the probability that a person chosen at random is either a male or younger than 70 years old ?

Output: 199 / 250


Input: Consider Input: Problem: the diameter of the driving wheel of a bus in 140 cm . how many revolutions per minute must the wheel make in order to keep a speed of 33 kmph ?

Output: 125


Input: Consider Input: Problem: how many prime numbers are between 25 / 3 and 84 / 6 ?


Output: 2