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_18712423_3 (series_episode INTEGER, viewers__millions_ VARCHAR)
### Question:
What is the show episode number of the episode that reached 1.215 millions views?
### Answer:
SELECT MIN(series_episode) FROM table_18712423_3 WHERE viewers__millions_ = "1.215"