CREATE TABLE table_21918 ("Year" FLOAT, "Date" TEXT, "Driver" TEXT, "Manufacturer" TEXT, "Laps" FLOAT, "Miles  ( km ) " TEXT, "Race Time" TEXT, "Average Speed  ( mph ) " TEXT)

For races with an average speed of 113.835 mph, what are the winning race times?
SELECT "Race Time" FROM table_21918 WHERE "Average Speed (mph)" = '113.835'
SELECT "Race Time" FROM "table_21918" WHERE "Average Speed (mph)" = '113.835'