CREATE TABLE table_52018 ("Position" FLOAT, "Club" TEXT, "Played" FLOAT, "Points" TEXT, "Wins" FLOAT, "Draws" FLOAT, "Losses" FLOAT, "Goals for" FLOAT, "Goals against" FLOAT, "Goal Difference" FLOAT)

Name the least goals for goal difference of 7 and losses more than 13
SELECT MIN("Goals against") FROM table_52018 WHERE "Goal Difference" = '7' AND "Losses" > '13'
SELECT MIN("Goals against") FROM "table_52018" WHERE "Goal Difference" = '7' AND "Losses" > '13'