var brutto: Long
total brutto of all products with sale discount
brutto = SaleInfo.relativeDiscount == 0 ? round(VatRateSumInfo.vanillaBrutto - SaleInfo.absoluteDiscount * VatRateSumInfo.vanillaBrutto * 10 / SaleInfo.vanillaBrutto / 10) : round(VatRateSumInfo.vanillaBrutto * (10000 - SaleInfo.relativeDiscount) / 10000)