With a System ticket you can win multiple prizes with a single entry. For example, let's say you purchase a Saturday Lotto System 7 entry containing seven numbers 1, 2, 3, 4, 5, 6 and 7.
The Winning Numbers drawn are 1, 2, 3, 10, 11 and 12 and the two Supplementary Numbers are 6 and 7.
You will be able to match three Winning Numbers and two Supplementary Numbers. If you were to write out every combination of the seven games a System 7 entry gives you, you'd find that you have won four Division 5 prizes and three Division 6 prizes.