CREATE TABLE table_53397 ("English Name" TEXT, "Simplified" TEXT, "Traditional" TEXT, "Pinyin" TEXT, "Hakka" TEXT, "Area" FLOAT, "Population" FLOAT, "Density" FLOAT)

What's the total number of density for the place with a population over 393,390?
SELECT COUNT("Density") FROM table_53397 WHERE "Population" > '393,390'
SELECT COUNT("Density") FROM "table_53397" WHERE "Population" > '393,390'