What's the number of the episode seen by 2.24 million people in the US?
CREATE TABLE table_21696800_1 (_number VARCHAR, us_viewers__million_ VARCHAR)
SELECT _number FROM table_21696800_1 WHERE us_viewers__million_ = "2.24"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_21696800_1 (_number VARCHAR, us_viewers__million_ VARCHAR) Question: What's the number of the episode seen by 2.24 million people in the US? [/INST] SELECT _number FROM table_21696800_1 WHERE us_viewers__million_ = "2.24" </s>