CREATE TABLE table_29122 ("No." FLOAT, "#" FLOAT, "Title" TEXT, "Directed by" TEXT, "Story by" TEXT, "Teleplay by" TEXT, "Original air date" TEXT, "U.S. viewers  ( millions ) " TEXT)

How many viewers watched the episode with a story by david simon & mari kornhauser?
SELECT "U.S. viewers (millions)" FROM table_29122 WHERE "Story by" = 'David Simon & Mari Kornhauser'
SELECT "U.S. viewers (millions)" FROM "table_29122" WHERE "Story by" = 'David Simon & Mari Kornhauser'