CREATE TABLE table_name_21 (ranking VARCHAR, ep__number VARCHAR, rating VARCHAR)

What was the ranking for the episode number before 24 that had a rating of 25.7?
SELECT ranking FROM table_name_21 WHERE ep__number < 24 AND rating = "25.7"
SELECT "ranking" FROM "table_name_21" WHERE "25.7" = "rating" AND "ep__number" < 24