Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:

Convert text to sql: On average, how old are the members in the club "Hopkins Student Enterprises"? | student : stuid , lname , fname , age , sex , major , advisor , city_code | club : clubid , clubname , clubdesc , clublocation | member_of_club : stuid , clubid , position | member_of_club.clubid = club.clubid | member_of_club.stuid = student.stuid | 

### Response:

select avg ( _ ) from _ where _ | select avg ( student.age ) from club join member_of_club on club.clubid = member_of_club.clubid join student on member_of_club.stuid = student.stuid where club.clubname = 'Hopkins Student Enterprises'