CREATE TABLE table_58239 ("Position" FLOAT, "Club" CLOB, "Played" FLOAT, "Points" FLOAT, "Wins" FLOAT, "Draws" FLOAT, "Losses" FLOAT, "Goals for" FLOAT, "Goals against" FLOAT, "Goal Difference" FLOAT)

what is the total number of goal different when the club is cf extremadura and the played is less than 38?
SELECT COUNT("Goal Difference") FROM table_58239 WHERE "Club" = 'cf extremadura' AND "Played" < '38'
SELECT COUNT("Goal Difference") FROM "table_58239" WHERE "Club" = 'cf extremadura' AND "Played" < '38'