Solutions by everydaycalculation.com
1824 - 1524 is 18.
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Related: 36/24-15/24 18/24-30/24 18/48-15/24 18/24-15/48 54/24-15/24 18/24-45/24 18/72-15/24 18/24-15/72 90/24-15/24 18/24-75/24
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