hacker.org

According to wolframalpha the sum of the first billion ends with 90.6, so the phyton code should actually print out a number ending with 90 because it does not round properly. http://www.wolframalpha.com/input/?i=1000000000000*%281%2B7*Sum[1%2F%28%284k%2B1%29^2%2B2%284k%2B1%29%29,{k,0,1000000000000}...

Hippo wrote:For those who don´t like guessing ... the correct answer is smaller by one than the answer the challenge accepts.

If I round my result correctly I'm getting exactly the result accepted by the challenge.

Using the official source I was able to solve the first 6 characters, which showed me that I'm on the right track, but finding out which of the rest are right or wrong wasn't easy.
The challenge title and the hint about draw pointed me in the right direction.

The ranking hasn't updated for weeks now, I think it is stuck again. Can someone repair it?