CREATE TABLE table_16712 ("Rnd" FLOAT, "Race" TEXT, "Date" TEXT, "Location" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Race Winner" TEXT, "Constructor" TEXT, "Report" TEXT)

what's the total number of race winner with rnd being 10
SELECT COUNT("Race Winner") FROM table_16712 WHERE "Rnd" = '10'
SELECT COUNT("Race Winner") FROM "table_16712" WHERE "Rnd" = '10'