CREATE TABLE table_54702 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

How big was the crowd when collingwood visited?
SELECT COUNT("Crowd") FROM table_54702 WHERE "Away team" = 'collingwood'
SELECT COUNT("Crowd") FROM "table_54702" WHERE "Away team" = 'collingwood'