How many episodes had 11.86 million US viewers?
CREATE TABLE table_28215780_4 (no_in_series VARCHAR, us_viewers__millions_ VARCHAR)
SELECT COUNT(no_in_series) FROM table_28215780_4 WHERE us_viewers__millions_ = "11.86"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_28215780_4 (no_in_series VARCHAR, us_viewers__millions_ VARCHAR) Question: How many episodes had 11.86 million US viewers? [/INST] SELECT COUNT(no_in_series) FROM table_28215780_4 WHERE us_viewers__millions_ = "11.86" </s>