Solutions by everydaycalculation.com
2130 - 130 is 23.
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Related: 42/30-1/30 21/30-2/30 21/60-1/30 21/30-1/60 63/30-1/30 21/30-3/30 21/90-1/30 21/30-1/90 21/30-5/30 21/30-7/30
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