CREATE TABLE table_23433 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( millions ) " CLOB)

How many episodes had the series number of 38?
SELECT COUNT("Directed by") FROM table_23433 WHERE "No. in series" = '38'
SELECT COUNT("Directed by") FROM "table_23433" WHERE "No. in series" = '38'