Solutions by everydaycalculation.com
1st number: 16 0/4, 2nd number: 7/8
644 + 78 is 1358.
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Related: 64/4+14/8 64/8+7/8 64/4+7/16 64/4+21/8 64/12+7/8 64/4+7/24 64/4+35/8 64/20+7/8 64/4+7/40 64/4+49/8 64/28+7/8 64/4+7/56
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