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_85 (hosted VARCHAR, average VARCHAR)
### Question:
How many were hosted whene the average attendance was 27,638?
### Answer:
SELECT COUNT(hosted) FROM table_name_85 WHERE average = 27 OFFSET 638