CREATE TABLE table_28745 ("Year" FLOAT, "Races" FLOAT, "Wins" FLOAT, "Poles" FLOAT, "Top 5" FLOAT, "Top 10" FLOAT, "DNF" FLOAT, "Finish" TEXT, "Start" TEXT, "Winnings" TEXT, "Season Rank" TEXT, "Team ( s ) " TEXT)

Where did he finish when he started at 21.6?
SELECT COUNT("Finish") FROM table_28745 WHERE "Start" = '21.6'
SELECT COUNT("Finish") FROM "table_28745" WHERE "Start" = '21.6'