Assume a Turkish Lira (TRY) is worth 0.21 Australian Dollar (AUD). An Australian Dollar can be exchanged for 16400 Vietnamese Dong (VND). Last year, an Australian Dollar was valued at 4.85 Turkish Lira, and a VND was valued at 0.000062 AUD. Required Calculate the cross exchange rate of TRY in VND for both years and state which currency has depreciated and which currency has appreciated. (Show all necessary steps and calculations)