CREATE TABLE table_75870 ("Rank" TEXT, "Nation" TEXT, "Gold" FLOAT, "Silver" FLOAT, "Bronze" FLOAT, "Total" FLOAT)

What is the total number of medals when there are 18 gold medals?
SELECT SUM("Total") FROM table_75870 WHERE "Gold" = '18'
SELECT SUM("Total") FROM "table_75870" WHERE "Gold" = '18'