What was the average Jersey # of Steve Griffith, when his Weight (kg) was less than 84?
CREATE TABLE table_41521 (
    "Position" text,
    "Jersey #" real,
    "Name" text,
    "Height (cm)" real,
    "Weight (kg)" real,
    "Birthdate" text,
    "Birthplace" text,
    "Previous Club/Team" text
)
SELECT AVG("Jersey #") FROM table_41521 WHERE "Name" = 'steve griffith' AND "Weight (kg)" < '84'
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 was the average Jersey # of Steve Griffith, when his Weight (kg) was less than 84? ### Input: CREATE TABLE table_41521 (
    "Position" text,
    "Jersey #" real,
    "Name" text,
    "Height (cm)" real,
    "Weight (kg)" real,
    "Birthdate" text,
    "Birthplace" text,
    "Previous Club/Team" text
) ### Response: SELECT AVG("Jersey #") FROM table_41521 WHERE "Name" = 'steve griffith' AND "Weight (kg)" < '84'