CREATE TABLE table_16737 ("Rnd" FLOAT, "Race" TEXT, "Date" TEXT, "Location" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Race Winner" TEXT, "Constructor" TEXT, "Report" TEXT)

How many days is the Monaco Grand Prix?
SELECT COUNT("Date") FROM table_16737 WHERE "Race" = 'Monaco Grand Prix'
SELECT COUNT("Date") FROM "table_16737" WHERE "Race" = 'Monaco Grand Prix'