Solutions by everydaycalculation.com
1830 - 1630 is 115.
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Related: 36/30-16/30 18/30-32/30 18/60-16/30 18/30-16/60 54/30-16/30 18/30-48/30 18/90-16/30 18/30-16/90 90/30-16/30 18/30-80/30
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