Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_64 (play_offs INTEGER, club VARCHAR, total VARCHAR)
### Question:
What is the highest play-offs that have stevenage borough as the club, and a total greater than 21?
### Answer:
SELECT MAX(play_offs) FROM table_name_64 WHERE club = "stevenage borough" AND total > 21