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_28037619_2 (production_code VARCHAR, us_viewers__million_ VARCHAR)
### Question:
How many production codes are there for the episode that had 4.36 million u.s. viewers?
### Answer:
SELECT COUNT(production_code) FROM table_28037619_2 WHERE us_viewers__million_ = "4.36"