How many weeks ended in a result of L 20-10?
CREATE TABLE table_33180 (
    "Week" real,
    "Date" text,
    "Opponent" text,
    "Result" text,
    "Attendance" text
)
SELECT COUNT("Week") FROM table_33180 WHERE "Result" = 'l 20-10'
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: How many weeks ended in a result of L 20-10? ### Input: CREATE TABLE table_33180 (
    "Week" real,
    "Date" text,
    "Opponent" text,
    "Result" text,
    "Attendance" text
) ### Response: SELECT COUNT("Week") FROM table_33180 WHERE "Result" = 'l 20-10'