What is the grid number for troy corser with under 22 laps?
CREATE TABLE table_name_48 (
    grid INTEGER,
    rider VARCHAR,
    laps VARCHAR
)
SELECT SUM(grid) FROM table_name_48 WHERE rider = "troy corser" AND laps < 22
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 grid number for troy corser with under 22 laps? ### Input: CREATE TABLE table_name_48 (
    grid INTEGER,
    rider VARCHAR,
    laps VARCHAR
) ### Response: SELECT SUM(grid) FROM table_name_48 WHERE rider = "troy corser" AND laps < 22