On how many dates did the Michigan International Speedway hold a round?
CREATE TABLE table_10725629_2 (
    date VARCHAR,
    circuit VARCHAR
)
SELECT COUNT(date) FROM table_10725629_2 WHERE circuit = "Michigan International Speedway"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: On how many dates did the Michigan International Speedway hold a round? ### Input: CREATE TABLE table_10725629_2 (
    date VARCHAR,
    circuit VARCHAR
) ### Response: SELECT COUNT(date) FROM table_10725629_2 WHERE circuit = "Michigan International Speedway"