The formula for Google pagerank calculation
PR(A) = (1-d) + d(PR(t1)/C(t1) + … + PR(tn)/C(tn)).
PR(A) is Pagerank of page A (ex: webmasterseoblog.com)
t1, t2…tn are backlinks to page A
C is link outbound of page t1, t2 …tn (out site)
d is coefficient pare
Ex: Page A have 3 page B (PR=6) page C (PR=3) and page D [...]



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