What is the sum of Artist Steve Hepburn's Mintage?
CREATE TABLE table_name_75 (mintage INTEGER, artist VARCHAR)
SELECT SUM(mintage) FROM table_name_75 WHERE artist = "steve hepburn"
### Context: CREATE TABLE table_name_75 (mintage INTEGER, artist VARCHAR) ### Question: What is the sum of Artist Steve Hepburn's Mintage? ### Answer: SELECT SUM(mintage) FROM table_name_75 WHERE artist = "steve hepburn"