Solutions by everydaycalculation.com
18 - 218 is 172.
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Related: 2/8-2/18 1/8-4/18 1/16-2/18 1/8-2/36 3/8-2/18 1/8-6/18 1/24-2/18 1/8-2/54 5/8-2/18 1/8-10/18 1/40-2/18 1/8-2/90 7/8-2/18 1/8-14/18 1/56-2/18
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