text: 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_12570759_2 (written_by VARCHAR, us_viewers__millions_ VARCHAR)
  ### Question:
  How many episodes were watched by 12.72 million U.S. viewers?
  ### Answer:
  SELECT COUNT(written_by) FROM table_12570759_2 WHERE us_viewers__millions_ = "12.72"