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_26198709_1 (production_code VARCHAR, us_viewers__million_ VARCHAR)
### Question:
What is the production code for the episode that had 18.07 million viewers? 
### Answer:
SELECT production_code FROM table_26198709_1 WHERE us_viewers__million_ = "18.07"