6/7 × 7/8 × 8/9 × 9/8 × 10/11 × 11/10 × 12/13 × 13/12 × 14/19 = 14/19
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6/7 × 7/8 × 8/9 × 9/8 × 10/11 × 11/10 × 12/13 × 13/12 × 14/19 = 14/19