CREATE TABLE table_204_958 (id DECIMAL, "episode" DECIMAL, "original broadcast date" TEXT, "average" DECIMAL, "rank" DECIMAL, "remarks" TEXT)

how many episodes had an average over 0.75 ?
SELECT COUNT("episode") FROM table_204_958 WHERE "average" > 0.75
SELECT COUNT("episode") FROM "table_204_958" WHERE "average" > 0.75