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_87 (free INTEGER, total VARCHAR, rank VARCHAR)
### Question:
what is the most free when the total is 81.167 and the rank is higher than 23?
### Answer:
SELECT MAX(free) FROM table_name_87 WHERE total = 81.167 AND rank > 23