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89 - 57 is 1163.
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Related: 16/9-5/7 8/9-10/7 8/18-5/7 8/9-5/14 24/9-5/7 8/9-15/7 8/27-5/7 8/9-5/21 40/9-5/7 8/9-25/7 8/45-5/7 8/9-5/35 56/9-5/7 8/9-35/7 8/63-5/7 8/9-5/49
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