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_11630008_7 (series__number VARCHAR, production_code VARCHAR)
  ### Question:
  What is the number of series with production code 503?
  ### Answer:
  SELECT COUNT(series__number) FROM table_11630008_7 WHERE production_code = 503