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_24910733_2 (share VARCHAR, air_date VARCHAR)
### Question:
How many share figures are there for the episode that aired on October 17, 2007?
### Answer:
SELECT COUNT(share) FROM table_24910733_2 WHERE air_date = "October 17, 2007"