What is the average number of goals with 21 games for a debut round less than 1?
CREATE TABLE table_45742 (
    "Name" text,
    "Club" text,
    "Debut round" real,
    "Games (2008)" real,
    "Goals (2008)" real,
    "Previous club(s)" text
)
SELECT AVG("Goals (2008)") FROM table_45742 WHERE "Games (2008)" = '21' AND "Debut round" < '1'
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 is the average number of goals with 21 games for a debut round less than 1? ### Input: CREATE TABLE table_45742 (
    "Name" text,
    "Club" text,
    "Debut round" real,
    "Games (2008)" real,
    "Goals (2008)" real,
    "Previous club(s)" text
) ### Response: SELECT AVG("Goals (2008)") FROM table_45742 WHERE "Games (2008)" = '21' AND "Debut round" < '1'