string GetMarketingActivity(string text, GameEntity product) { var churn = Marketing.GetChurnRate(product, Q); var joinedChannels = product.companyMarketingActivities.Channels.Keys .Select(k => Marketing.GetChannelClientGain(product, k)) .Sum(); text += $"\n{(int)churn}% channels: " + Marketing.GetActiveChannelsCount(product) + $" +{Format.Minify(joinedChannels)}\n"; return(text); }