CREATE TABLE table_56155 ("Team" TEXT, "Points" FLOAT, "Played" FLOAT, "Drawn" FLOAT, "Lost" FLOAT, "Against" FLOAT, "Diff" FLOAT)

What is the sum of the difference for 9 draws and over 18 played?
SELECT SUM("Diff") FROM table_56155 WHERE "Drawn" = '9' AND "Played" > '18'
SELECT SUM("Diff") FROM "table_56155" WHERE "Drawn" = '9' AND "Played" > '18'