Solutions by everydaycalculation.com
814 - 310 is 1970.
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Related: 16/14-3/10 8/14-6/10 8/28-3/10 8/14-3/20 24/14-3/10 8/14-9/10 8/42-3/10 8/14-3/30 40/14-3/10 8/14-15/10 8/70-3/10 8/14-3/50 56/14-3/10 8/14-21/10 8/98-3/10 8/14-3/70
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