Rounding to decimal places with correct decimal seperator for locale

file.swift

extension NSDecimalNumber {
    func round(decimalPlaces: Int, roundingMode: RoundingMode) -> NSDecimalNumber {
        let handler = NSDecimalNumberHandler(
            roundingMode: roundingMode,
            scale: Int16(decimalPlaces),
            raiseOnExactness: false,
            raiseOnOverflow: false,
            raiseOnUnderflow: false,
            raiseOnDivideByZero: false)
        return rounding(accordingToBehavior: handler)
    }
}

extension Package {
    func priceStringDividedBy(number: Double) -> String {
        assert(number != 0)
        return storeProduct
            .priceDecimalNumber
            .dividing(by: NSDecimalNumber(value: number))
            .round(decimalPlaces: 2, roundingMode: .up)
            .description(withLocale: Locale.current)
    }
}