How many teams had 632 points against?
CREATE TABLE table_21051 (
    "Club" text,
    "Played" text,
    "Won" text,
    "Drawn" text,
    "Lost" text,
    "Points for" text,
    "Points against" text,
    "Points difference" text,
    "Points" text
)
SELECT COUNT("Points for") FROM table_21051 WHERE "Points against" = '632'
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 teams had 632 points against? ### Input: CREATE TABLE table_21051 (
    "Club" text,
    "Played" text,
    "Won" text,
    "Drawn" text,
    "Lost" text,
    "Points for" text,
    "Points against" text,
    "Points difference" text,
    "Points" text
) ### Response: SELECT COUNT("Points for") FROM table_21051 WHERE "Points against" = '632'