What is the show episode number of the episode that reached 1.215 millions views?
CREATE TABLE table_18712423_3 (
    series_episode INTEGER,
    viewers__millions_ VARCHAR
)
SELECT MIN(series_episode) FROM table_18712423_3 WHERE viewers__millions_ = "1.215"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the show episode number of the episode that reached 1.215 millions views? ### Input: CREATE TABLE table_18712423_3 (
    series_episode INTEGER,
    viewers__millions_ VARCHAR
) ### Response: SELECT MIN(series_episode) FROM table_18712423_3 WHERE viewers__millions_ = "1.215"