Solutions by everydaycalculation.com
1st number: 5 1/3, 2nd number: 6/15
163 - 615 is 7415.
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Related: 32/3-6/15 16/3-12/15 16/6-6/15 16/3-6/30 48/3-6/15 16/3-18/15 16/9-6/15 16/3-6/45 80/3-6/15 16/3-30/15 16/15-6/15 16/3-6/75 16/3-42/15 16/21-6/15
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