How many production codes are there for 'the sub'?
CREATE TABLE table_73363 (
    "No. in series" real,
    "No. in season" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "Production code" real
)
SELECT COUNT("Production code") FROM table_73363 WHERE "Title" = 'The Sub'
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 production codes are there for 'the sub'? ### Input: CREATE TABLE table_73363 (
    "No. in series" real,
    "No. in season" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "Production code" real
) ### Response: SELECT COUNT("Production code") FROM table_73363 WHERE "Title" = 'The Sub'