What is largest series number for the episode that aired February 16, 1957?
CREATE TABLE table_28109 (
    "Series #" real,
    "Season #" real,
    "Title" text,
    "Director" text,
    "Writer(s)" text,
    "Airdate" text
)
SELECT MAX("Series #") FROM table_28109 WHERE "Airdate" = 'February 16, 1957'
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 largest series number for the episode that aired February 16, 1957? ### Input: CREATE TABLE table_28109 (
    "Series #" real,
    "Season #" real,
    "Title" text,
    "Director" text,
    "Writer(s)" text,
    "Airdate" text
) ### Response: SELECT MAX("Series #") FROM table_28109 WHERE "Airdate" = 'February 16, 1957'