What is the average number of not usable satellited when there are 0 retired, and the launch failures are less than 1?
CREATE TABLE table_40907 (
    "Block" text,
    "Launched" real,
    "Operational" real,
    "Not usable" real,
    "Retired" real,
    "Launch Failures" real
)
SELECT AVG("Not usable") FROM table_40907 WHERE "Retired" = '0' AND "Launch Failures" < '1'
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 average number of not usable satellited when there are 0 retired, and the launch failures are less than 1? ### Input: CREATE TABLE table_40907 (
    "Block" text,
    "Launched" real,
    "Operational" real,
    "Not usable" real,
    "Retired" real,
    "Launch Failures" real
) ### Response: SELECT AVG("Not usable") FROM table_40907 WHERE "Retired" = '0' AND "Launch Failures" < '1'