Company THT is planning to buy new production equipment. The cost of this equipment is estimated of VND $9,000$ million. This equipment depreciates over $6$ years with a straight$-$line depreciation method. At the end of the $5$th year, the selling price is expected equipment is VND $1,700$ million, the cost to liquidate the equipment is VND $80$ million. The corporate income tax is $20\%.$ Requirement: Determine the net salvage value of this equipment?