How does a System 7 work in lotto?

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.
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