SELECT SUM(tonnage___grt__) FROM table_name_83 WHERE fate = "sunk" AND flag = "great britain" AND date = "26 september 1940" AND deaths = 2
Berapa banyak tonase yang memiliki nasib tenggelam, dan bendera Inggris Raya, dan tanggal 26 September 1940, dan kematian 2?
CREATE TABLE table_name_83 (tonnage___grt__ INTEGER, deaths VARCHAR, date VARCHAR, fate VARCHAR, flag VARCHAR)