CREATE TABLE table_54312 ("Res." TEXT, "Record" TEXT, "Opponent" TEXT, "Method" TEXT, "Round" FLOAT, "Time" TEXT, "Location" TEXT)

Tell me the sum of round for record of 6-3
SELECT SUM("Round") FROM table_54312 WHERE "Record" = '6-3'
SELECT SUM("Round") FROM "table_54312" WHERE "Record" = '6-3'