private static async Task UpdateLastPriceRate(decimal lastPrice, LastPriceRate lastPriceRates)
        {
            lastPriceRates.LastPrices.Enqueue(lastPrice);

            if (lastPriceRates.LastPrices.Count > Intervals[Intervals.Length - 1])
            {
                lastPriceRates.LastPrices.Dequeue();
            }

            lastPriceRates.LastPriceRates = await GetPriceRates(lastPriceRates);
        }
        private static async Task <List <string> > GetPriceRates(LastPriceRate lastPriceRates)
        {
            List <string> results = new List <string>();

            await Task.Run(() =>
            {
                foreach (int interval in Intervals)
                {
                    if (lastPriceRates.LastPrices.Count >= interval)
                    {
                        decimal total = decimal.Zero;
                        decimal i     = decimal.Zero;
                        foreach (decimal item in lastPriceRates.LastPrices)
                        {
                            if (i < interval)
                            {
                                total += item;
                                i++;
                            }
                            else
                            {
                                break;
                            }
                        }

                        decimal average = total / interval;

                        if (average != decimal.Zero)
                        {
                            //decimal difference = (lastPriceRates.LastPrice - average) / average;
                            //results.Add(difference.ToString("P", CultureInfo.InvariantCulture));

                            //decimal difference = (lastPriceRates.LastPrice - average) / average;
                            results.Add(average.ToString("0.########"));
                        }
                        else
                        {
                            results.Add("0.0%");
                        }
                    }
                    else
                    {
                        break;
                    }
                }
            });

            return(results);
        }