How many millions of viewers did the episode written by Andrea Conway Kagey?
CREATE TABLE table_23399481_4 (
    us_viewers__in_millions_ VARCHAR,
    written_by VARCHAR
)
SELECT us_viewers__in_millions_ FROM table_23399481_4 WHERE written_by = "Andrea Conway Kagey"
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: How many millions of viewers did the episode written by Andrea Conway Kagey? ### Input: CREATE TABLE table_23399481_4 (
    us_viewers__in_millions_ VARCHAR,
    written_by VARCHAR
) ### Response: SELECT us_viewers__in_millions_ FROM table_23399481_4 WHERE written_by = "Andrea Conway Kagey"