Solutions by everydaycalculation.com
845 - 645 is 245.
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Related: 16/45-6/45 8/45-12/45 8/90-6/45 8/45-6/90 24/45-6/45 8/45-18/45 40/45-6/45 8/45-30/45 56/45-6/45 8/45-42/45
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