How many people wrote the episode with 3.40 million U.S viewers?
CREATE TABLE table_26748252_1 (written_by VARCHAR, us_viewers__in_millions_ VARCHAR)
SELECT COUNT(written_by) FROM table_26748252_1 WHERE us_viewers__in_millions_ = "3.40"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_26748252_1 (written_by VARCHAR, us_viewers__in_millions_ VARCHAR) Question: How many people wrote the episode with 3.40 million U.S viewers? [/INST] SELECT COUNT(written_by) FROM table_26748252_1 WHERE us_viewers__in_millions_ = "3.40" </s>