CREATE TABLE table_24600 ("Season no." FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. Viewers  ( millions ) " TEXT)

What was the number of US Viewers in the episode directed by Steve Shill and having a production code of E2102?
SELECT "U.S. Viewers (millions)" FROM table_24600 WHERE "Directed by" = 'Steve Shill' AND "Production code" = 'E2102'
SELECT "U.S. Viewers (millions)" FROM "table_24600" WHERE "Directed by" = 'Steve Shill' AND "Production code" = 'E2102'