CREATE TABLE table_2910 ("Episode" TEXT, "First broadcast" TEXT, "Davids team" TEXT, "Lees team" TEXT, "Scores" TEXT)

If the episode is 6x03, what is the first broadcast total number?
SELECT COUNT("First broadcast") FROM table_2910 WHERE "Episode" = '6x03'
SELECT COUNT("First broadcast") FROM "table_2910" WHERE "Episode" = '6x03'