CREATE TABLE table_58570 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What was the attendance of the North Melbourne's home game?
SELECT COUNT("Crowd") FROM table_58570 WHERE "Home team" = 'north melbourne'
SELECT COUNT("Crowd") FROM "table_58570" WHERE "Home team" = 'north melbourne'