What was the final number for the winning manufacturer with Mercedes-benz, and a circuit of hockenheimring?
CREATE TABLE table_name_18 (
    round VARCHAR,
    winning_manufacturer VARCHAR,
    circuit VARCHAR
)
SELECT COUNT(round) FROM table_name_18 WHERE winning_manufacturer = "mercedes-benz" AND circuit = "hockenheimring"
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 final number for the winning manufacturer with Mercedes-benz, and a circuit of hockenheimring? ### Input: CREATE TABLE table_name_18 (
    round VARCHAR,
    winning_manufacturer VARCHAR,
    circuit VARCHAR
) ### Response: SELECT COUNT(round) FROM table_name_18 WHERE winning_manufacturer = "mercedes-benz" AND circuit = "hockenheimring"