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_21 ( ranking VARCHAR, ep__number VARCHAR, rating VARCHAR )

### Question ###
What was the ranking for the episode number before 24 that had a rating of 25.7?

### Accurate SQL ###

SELECT ranking FROM table_name_21 WHERE ep__number < 24 AND rating = "25.7"