From the following details, calculate depreciation under written down value method by using spread sheet.
1. Purchase of Machinery – 10-6-2012
2. Cost of the Machinery – 300000
3. Machinery installed on – 15-6-2012
4. Installation Expenses – 2000
5. Pre operating cost – 13000
6. Salvage value after 8 years – 18000
7. 1st year end date – 31/3/2013