What is the average number for Black Milk?
CREATE TABLE table_name_18 (number INTEGER, artist VARCHAR)
SELECT AVG(number) FROM table_name_18 WHERE artist = "black milk"
### Context: CREATE TABLE table_name_18 (number INTEGER, artist VARCHAR) ### Question: What is the average number for Black Milk? ### Answer: SELECT AVG(number) FROM table_name_18 WHERE artist = "black milk"