CREATE TABLE table_name_23 (points_difference VARCHAR2, played VARCHAR2, points_for VARCHAR2)

Which Points difference has Played of 32, and Points for of 840?
SELECT points_difference FROM table_name_23 WHERE played = "32" AND points_for = "840"
SELECT "points_difference" FROM "table_name_23" WHERE "32" = "played" AND "840" = "points_for"