CREATE TABLE table_54635 ("Episode" TEXT, "Air Date" TEXT, "Timeslot  ( EST ) " TEXT, "Rating" FLOAT, "Share" TEXT, "18\\u201349 Rating" TEXT, "Viewers  ( millions ) " FLOAT, "Rank" TEXT)

How many total viewers for 'the summer house'?
SELECT SUM("Viewers (millions)") FROM table_54635 WHERE "Episode" = 'the summer house'
SELECT SUM("Viewers (millions)") FROM "table_54635" WHERE "Episode" = 'the summer house'