CREATE TABLE table_58644 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Venue" TEXT, "Attendance" FLOAT)

Which Week has an Attendance of 20,112?
SELECT MAX("Week") FROM table_58644 WHERE "Attendance" = '20,112'
SELECT MAX("Week") FROM "table_58644" WHERE "Attendance" = '20,112'