When 1008/1009 is the production code how many directors are there?
CREATE TABLE table_22423 (
    "No. in series" text,
    "Title" text,
    "Directed By" text,
    "Written By" text,
    "air date" text,
    "Production code" text
)
SELECT COUNT("Directed By") FROM table_22423 WHERE "Production code" = '1008/1009'
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: When 1008/1009 is the production code how many directors are there? ### Input: CREATE TABLE table_22423 (
    "No. in series" text,
    "Title" text,
    "Directed By" text,
    "Written By" text,
    "air date" text,
    "Production code" text
) ### Response: SELECT COUNT("Directed By") FROM table_22423 WHERE "Production code" = '1008/1009'