CREATE TABLE table_1500 ("Finish" TEXT, "Race" TEXT, "Distance" TEXT, "Jockey" TEXT, "Time" TEXT, "Victory Margin  ( in lengths ) " TEXT, "Runner up" TEXT, "Track" TEXT, "Surface" TEXT, "Date" TEXT)

With a date of 8/3/08, what was the length of the victory margin?
SELECT COUNT("Victory Margin (in lengths)") FROM table_1500 WHERE "Date" = '8/3/08'
SELECT COUNT("Victory Margin (in lengths)") FROM "table_1500" WHERE "Date" = '8/3/08'