How many different episode numbers are there for the episodes directed by Sheri Elwood?
CREATE TABLE table_74065 (
    "Total #" real,
    "Episode #" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text
)
SELECT COUNT("Total #") FROM table_74065 WHERE "Directed by" = 'Sheri Elwood'
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 different episode numbers are there for the episodes directed by Sheri Elwood? ### Input: CREATE TABLE table_74065 (
    "Total #" real,
    "Episode #" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text
) ### Response: SELECT COUNT("Total #") FROM table_74065 WHERE "Directed by" = 'Sheri Elwood'