Solutions by everydaycalculation.com
818 - 818 is 01.
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Related: 16/18-8/18 8/18-16/18 8/36-8/18 8/18-8/36 24/18-8/18 8/18-24/18 8/54-8/18 8/18-8/54 40/18-8/18 8/18-40/18 8/90-8/18 8/18-8/90 56/18-8/18 8/18-56/18
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