CREATE TABLE table_41856 ("Rank" FLOAT, "Location" TEXT, "Total Passengers" FLOAT, "Annual change" TEXT, "Capacity in use" TEXT)

what is the number of passengers when the capacity is 81.2%?
SELECT SUM("Total Passengers") FROM table_41856 WHERE "Capacity in use" = '81.2%'
SELECT SUM("Total Passengers") FROM "table_41856" WHERE "Capacity in use" = '81.2%'