Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_85 ( goals_for INTEGER, wins VARCHAR, goals_against VARCHAR )

### Question ###
What is the smallest number of 'goals for' out of the clubs where there were 18 wins and fewer than 38 'goals against'?

### Accurate SQL ###

SELECT MIN(goals_for) FROM table_name_85 WHERE wins = 18 AND goals_against < 38