CREATE TABLE table_27638 ("Season" FLOAT, "Series" TEXT, "Team" TEXT, "Races" FLOAT, "Wins" FLOAT, "Poles" FLOAT, "F/Laps" FLOAT, "Podiums" FLOAT, "Points" TEXT, "Position" TEXT)

How many f/laps did Pedro Nunes have when he was in 20th position?
SELECT COUNT("F/Laps") FROM table_27638 WHERE "Position" = '20th'
SELECT COUNT("F/Laps") FROM "table_27638" WHERE "Position" = '20th'