When 1.17 is the production code how many air dates are there?
CREATE TABLE table_23554 (
    "#" text,
    "Original title" text,
    "Directed by" text,
    "Written by" text,
    "Original airdate" text,
    "Prod. code" text,
    "Viewers" real
)
SELECT COUNT("Original airdate") FROM table_23554 WHERE "Prod. code" = '1.17'
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 1.17 is the production code how many air dates are there? ### Input: CREATE TABLE table_23554 (
    "#" text,
    "Original title" text,
    "Directed by" text,
    "Written by" text,
    "Original airdate" text,
    "Prod. code" text,
    "Viewers" real
) ### Response: SELECT COUNT("Original airdate") FROM table_23554 WHERE "Prod. code" = '1.17'