Solutions by everydaycalculation.com
1st number: 16 0/4, 2nd number: 5/8
644 + 58 is 1338.
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Related: 64/4+10/8 64/8+5/8 64/4+5/16 64/4+15/8 64/12+5/8 64/4+5/24 64/4+25/8 64/20+5/8 64/4+5/40 64/4+35/8 64/28+5/8 64/4+5/56
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