3. A certain company exports a certain product, CIF Vancouver at $500 per ton, with a foreign shipping cost of $70 per ton and an insurance premium of $6.5 per ton. The actual procurement cost of this product is 1800 yuan per ton, and the domestic direct and indirect expenses are 17% of the actual procurement price. Calculate the export exchange cost of this product. The current bank foreign exchange rate is 6.8 yuan (buying price) for 1 US dollar, and the export profit and loss amount and export profit and loss ratio are calculated for each ton