What is the total processed time of all solutions from the repository with the most forks?
total processed time = AVG(ProcessedTime where MAX(COUNT(Forks))); repository with the most forks refers to MAX(COUNT(Forks));
SELECT SUM(T2.ProcessedTime) FROM Repo AS T1 INNER JOIN Solution AS T2 ON T1.Id = T2.RepoId WHERE T1.Forks = ( SELECT MAX(Forks) FROM Repo )