Solutions by everydaycalculation.com
1st number: 2 6/18, 2nd number: 16/18
4218 - 1618 is 139.
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Related: 84/18-16/18 42/18-32/18 42/36-16/18 42/18-16/36 42/18-48/18 42/54-16/18 42/18-16/54 42/18-80/18 42/90-16/18 42/18-16/90
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