Solutions by everydaycalculation.com
2430 - 430 is 23.
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Related: 48/30-4/30 24/30-8/30 24/60-4/30 24/30-4/60 72/30-4/30 24/30-12/30 24/90-4/30 24/30-4/90 24/30-20/30 24/30-28/30
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