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

Ex Input:
Problem: the average of first six prime numbers greater than 20 is ?

Ex Output:
3

Ex Input:
Problem: the captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older . if the ages of these two are excluded , the average age of the remaining players is one year less than the average age of the whole team . find out the average age of the team .

Ex Output:
23

Ex Input:
Problem: there are 2 sections a and b in a class , consisting of 36 and 44 students respectively . if the average weight of section a is 40 kg and that of section b is 35 kg , find the average of the whole class ?

Ex Output:
37.25 kg