public async Task <IActionResult> CreateCalculation([FromBody] Calculation calculation)
        {
            try
            {
                calculation.Agent     = Agent + "/ ip = " + calculation.Agent;
                calculation.CreatedAt = DateTime.UtcNow;
                calculation           = await calculationService.Calculate(calculation);

                await calculationService.CreateCalculationAsync(calculation);

                return(new OkObjectResult(calculation));
            }
            catch (Exception ex)
            {
                return(new BadRequestObjectResult(new { Message = ex.Message }));
            }
        }