Solutions by everydaycalculation.com
1618 - 218 is 79.
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Related: 32/18-2/18 16/18-4/18 16/36-2/18 16/18-2/36 48/18-2/18 16/18-6/18 16/54-2/18 16/18-2/54 80/18-2/18 16/18-10/18 16/90-2/18 16/18-2/90 16/18-14/18
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