CREATE TABLE table_78421 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

How many people were in the crowd with the away team being collingwood?
SELECT COUNT("Crowd") FROM table_78421 WHERE "Away team" = 'collingwood'
SELECT COUNT("Crowd") FROM "table_78421" WHERE "Away team" = 'collingwood'