CREATE TABLE table_34824 ("Year" FLOAT, "Class" TEXT, "Team" TEXT, "Points" FLOAT, "Wins" FLOAT)

How many points have 500cc for the class, a win greater than 0, with a year after 1974?
SELECT SUM("Points") FROM table_34824 WHERE "Class" = '500cc' AND "Wins" > '0' AND "Year" > '1974'
SELECT SUM("Points") FROM "table_34824" WHERE "Class" = '500cc' AND "Wins" > '0' AND "Year" > '1974'