Solutions by everydaycalculation.com
624 - 1224 is -14.
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Related: 12/24-12/24 6/48-12/24 6/24-12/48 18/24-12/24 6/24-36/24 6/72-12/24 6/24-12/72 30/24-12/24 6/24-60/24 42/24-12/24 6/24-84/24
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