Solutions by everydaycalculation.com
78 - 47 is 1756.
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Related: 14/8-4/7 7/8-8/7 7/16-4/7 7/8-4/14 21/8-4/7 7/8-12/7 7/24-4/7 7/8-4/21 35/8-4/7 7/8-20/7 7/40-4/7 7/8-4/35 49/8-4/7 7/8-28/7 7/56-4/7 7/8-4/49
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