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_27720737_1 (series__number VARCHAR, production_code VARCHAR)
### Question:
How many episodes had a production code 120?
### Answer:
SELECT COUNT(series__number) FROM table_27720737_1 WHERE production_code = 120