Solutions by everydaycalculation.com
89 - 18 is 5572.
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Related: 16/9-1/8 8/9-2/8 8/18-1/8 8/9-1/16 24/9-1/8 8/9-3/8 8/27-1/8 8/9-1/24 40/9-1/8 8/9-5/8 8/45-1/8 8/9-1/40 56/9-1/8 8/9-7/8 8/63-1/8 8/9-1/56
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