Solutions by everydaycalculation.com
1st number: 1 12/30, 2nd number: 28/30
4230 - 2830 is 715.
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Related: 84/30-28/30 42/30-56/30 42/60-28/30 42/30-28/60 42/30-84/30 42/90-28/30 42/30-28/90
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