Use the below inputs to Compute discounted net cash flow starting from development period.

development period	Initial term 5 years.
production period	Initial term 20 years.
Royalty	10%
Cost Recovery	40%
Exploration costs	$72mm
Tax rate	35%
Capital costs	$508mm, assume to be incurred during the 5 years of development.
Depreciation rate	20% straight
Fixed operating costs	$20mm/year
Variable operating costs	$ 2/bbl.
Reserves	250mm barrels
discount rate	10%
Oil price	65 $/bbl.