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_48 (diff INTEGER, drawn VARCHAR, played VARCHAR)
### Question:
What is the sum of the difference for 9 draws and over 18 played?
### Answer:
SELECT SUM(diff) FROM table_name_48 WHERE drawn = 9 AND played > 18