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Answers and rating deltas for

Can someone tell me why my fraction always calculates as zero?

Author Votes Δ
NPE 10 +0.55
Ben Hocking 10 +3.57
Chowlett 3 +0.17
esskar 1 -1.85
crashmstr 1 -0.71
Barafu Albino 1 -1.81
Last visited: Sep 14, 2014, 5:07:29 AM