CREATE TABLE table_45831 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Attendance" TEXT)

What was the attendance of the game that ended with L 31-0
SELECT "Attendance" FROM table_45831 WHERE "Result" = 'l 31-0'
SELECT "Attendance" FROM "table_45831" WHERE "Result" = 'l 31-0'