text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_name_18 (round VARCHAR, winning_manufacturer VARCHAR, circuit VARCHAR)
  ### Question:
  What was the final number for the winning manufacturer with Mercedes-benz, and a circuit of hockenheimring?
  ### Answer:
  SELECT COUNT(round) FROM table_name_18 WHERE winning_manufacturer = "mercedes-benz" AND circuit = "hockenheimring"