On what week were there 26,243 in attendance on September 21, 1969?
CREATE TABLE table_40658 (
    "Week" real,
    "Date" text,
    "Opponent" text,
    "Result" text,
    "Attendance" real
)
SELECT COUNT("Week") FROM table_40658 WHERE "Date" = 'september 21, 1969' AND "Attendance" < '26,243'
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 what week were there 26,243 in attendance on September 21, 1969? ### Input: CREATE TABLE table_40658 (
    "Week" real,
    "Date" text,
    "Opponent" text,
    "Result" text,
    "Attendance" real
) ### Response: SELECT COUNT("Week") FROM table_40658 WHERE "Date" = 'september 21, 1969' AND "Attendance" < '26,243'