CREATE TABLE table_17620 ("Number in series" FLOAT, "Broadcast Order" CLOB, "Title" CLOB, "Villain/s" CLOB, "U.S. Air Date" CLOB, "Production Code" CLOB)

What's the number of episodes with a broadcast order s04 e07?
SELECT COUNT("Number in series") FROM table_17620 WHERE "Broadcast Order" = 'S04 E07'
SELECT COUNT("Number in series") FROM "table_17620" WHERE "Broadcast Order" = 'S04 E07'