CREATE TABLE table_54905 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Which Crowd has an Away team of collingwood?
SELECT SUM("Crowd") FROM table_54905 WHERE "Away team" = 'collingwood'
SELECT SUM("Crowd") FROM "table_54905" WHERE "Away team" = 'collingwood'