Solutions by everydaycalculation.com
1st number: 16 0/4, 2nd number: 7/8
644 - 78 is 1218.
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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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