How many rounds were run at Calder Park?
CREATE TABLE table_name_28 (round VARCHAR, circuit VARCHAR)
SELECT COUNT(round) FROM table_name_28 WHERE circuit = "calder park"
### Context: CREATE TABLE table_name_28 (round VARCHAR, circuit VARCHAR) ### Question: How many rounds were run at Calder Park? ### Answer: SELECT COUNT(round) FROM table_name_28 WHERE circuit = "calder park"