public void Calculate(Cart cart)
{
_productList = cart.GetItemsFromCart();
foreach (Product p in _productList)
{
_bill = GetBill(_country);
decimal productTax = _bill.CalculateTax(p.Price, p.GetTaxValue(_country));
decimal taxedCost = _bill.CalcTotalProductCost(p.Price, productTax);
p.TaxedCost = taxedCost;
}
}