CREATE TABLE table_79081 ("Opposing Teams" TEXT, "Against" FLOAT, "Date" TEXT, "Venue" TEXT, "Status" TEXT)

What is Against, when Opposing Teams is 'Australia', and when Date is '27/07/1991'?
SELECT "Against" FROM table_79081 WHERE "Opposing Teams" = 'australia' AND "Date" = '27/07/1991'
SELECT "Against" FROM "table_79081" WHERE "Date" = '27/07/1991' AND "Opposing Teams" = 'australia'