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_26808178_3 (series__number INTEGER, us_viewers__millions_ VARCHAR)
  ### Question:
  Which series # had 0.645 U.S. viewers(millions)?
  ### Answer:
  SELECT MAX(series__number) FROM table_26808178_3 WHERE us_viewers__millions_ = "0.645"