Solutions by everydaycalculation.com
1618 - 918 is 718.
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Related: 32/18-9/18 16/36-9/18 16/18-9/36 48/18-9/18 16/18-27/18 16/54-9/18 16/18-9/54 80/18-9/18 16/18-45/18 16/90-9/18 16/18-9/90 16/18-63/18
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