CREATE TABLE table_57269 ("Year" FLOAT, "Network" TEXT, "Lap-by-lap" TEXT, "s Color commentator" TEXT, "Pre-Race Host" TEXT, "Ratings" TEXT)

How many Years have Ratings of 10.9/23?
SELECT COUNT("Year") FROM table_57269 WHERE "Ratings" = '10.9/23'
SELECT COUNT("Year") FROM "table_57269" WHERE "Ratings" = '10.9/23'