public Calculator(BrokerageFeeRate brokerageFeeRate, ClearingFeeRate clearingFeeRate,
StampDutyRate stampDutyRate, SalesServiceTaxRate taxRate)
{
this.brokerageFeeRate = brokerageFeeRate;
this.clearingFeeRate = clearingFeeRate;
this.stampDutyRate = stampDutyRate;
this.taxRate = taxRate;
}
public static decimal ClearingFee(ClearingFeeRate feeRate, decimal amount) => Math.Min(feeRate.ClearingRate * amount, feeRate.MaximumFee);