CREATE TABLE table_52820 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

How many people in total have attended games where carlton played as away?
SELECT COUNT("Crowd") FROM table_52820 WHERE "Away team" = 'carlton'
SELECT COUNT("Crowd") FROM "table_52820" WHERE "Away team" = 'carlton'