CREATE TABLE table_22371 ("Episode" CLOB, "Broadcast date" CLOB, "Run time" CLOB, "Viewers  ( in millions ) " CLOB, "Archive" CLOB)

How many viewers in millions watched the episode 23:55 minutes long?
SELECT "Viewers (in millions)" FROM table_22371 WHERE "Run time" = '23:55'
SELECT "Viewers (in millions)" FROM "table_22371" WHERE "Run time" = '23:55'