CREATE TABLE table_73884 ("Round" FLOAT, "Circuit" TEXT, "Date" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Winning driver" TEXT, "Winning team" TEXT)

How many pole positions for round 20?
SELECT COUNT("Pole Position") FROM table_73884 WHERE "Round" = '20'
SELECT COUNT("Pole Position") FROM "table_73884" WHERE "Round" = '20'