A new machine costing Rs. 2 lakh was purchased by a company to manufacture a special product. Its useful life is estimated to be 5 years and scrap value at Rs. 20,000. The production plan for the next 5 years are as follows:
Year I 5,000 units,
Year II 10,000 units,
Year III 12,000 units,
Year IV 20,000 units,
Year V 25,000 units.
The depreciation for the 4 years under the units-of-production method will be_______.