Solutions by everydaycalculation.com
2430 - 930 is 12.
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Related: 48/30-9/30 24/30-18/30 24/60-9/30 24/30-9/60 72/30-9/30 24/30-27/30 24/90-9/30 24/30-9/90 24/30-45/30 24/30-63/30
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