CREATE TABLE table_17807 ("Club" TEXT, "Played" TEXT, "Won" TEXT, "Drawn" TEXT, "Lost" TEXT, "Points for" TEXT, "Points against" TEXT, "Tries for" TEXT, "Tries against" TEXT, "Try bonus" TEXT, "Losing bonus" TEXT, "Points" TEXT)

What was the won when the points for was 496?
SELECT "Won" FROM table_17807 WHERE "Points for" = '496'
SELECT "Won" FROM "table_17807" WHERE "Points for" = '496'