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_2 (goal_difference INTEGER, draw VARCHAR, played VARCHAR)
### Question:
Name the average goal difference for draw of 7 and played more than 18
### Answer:
SELECT AVG(goal_difference) FROM table_name_2 WHERE draw = 7 AND played > 18