private decimal getAnimalProducePrice() {
  AdminModel adminModel = _db.AdminModel.FirstOrDefault();
  AddressBalance balance = TRTLService.GetTRTLBalance(adminModel.PaymentAddress);
  decimal allDeposits = balance.availableBalance;
  var allAnimals = _db.Animals.ToList();
  var allUserAnimals = _db.UserAnimals.GroupBy(ua => ua.AnimalId).ToList();

  long totalClaimCount = 0;

  foreach (var userAnimal in allUserAnimals) {
    var tmpSum = userAnimal.Sum(ua => ua.AnimalCount) * allAnimals.Where(a => a.Id == userAnimal.First().AnimalId).FirstOrDefault().ProductionSpeed;
    totalClaimCount += Convert.ToInt64(tmpSum);
  }

  decimal unitPrice = 0;

  if (totalClaimCount > 0){
    unitPrice = allDeposits / totalClaimCount / 60;//ROI factor HARDCODED - at least 60 days(if you count off refs and other factors)
  }

  return unitPrice;
}