what is the total number of rank where viewers is 9.38?
CREATE TABLE table_15681686_4 (
    rank__timeslot_ VARCHAR,
    viewers__millions_ VARCHAR
)
SELECT COUNT(rank__timeslot_) FROM table_15681686_4 WHERE viewers__millions_ = "9.38"
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: what is the total number of rank where viewers is 9.38? ### Input: CREATE TABLE table_15681686_4 (
    rank__timeslot_ VARCHAR,
    viewers__millions_ VARCHAR
) ### Response: SELECT COUNT(rank__timeslot_) FROM table_15681686_4 WHERE viewers__millions_ = "9.38"