CREATE TABLE table_204_775 (id DECIMAL, "rank" DECIMAL, "nation" TEXT, "gold" DECIMAL, "silver" DECIMAL, "bronze" DECIMAL, "total" DECIMAL)

how many teams did not win any gold medals in this event ?
SELECT COUNT("nation") FROM table_204_775 WHERE "gold" = 0
SELECT COUNT("nation") FROM "table_204_775" WHERE "gold" = 0