Solutions by everydaycalculation.com
1642 - 442 is 27.
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Related: 32/42-4/42 16/42-8/42 16/84-4/42 16/42-4/84 48/42-4/42 16/42-12/42 80/42-4/42 16/42-20/42 16/42-28/42
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