can anyone help with this problem plz! thank you !

A three-year-old machine has a cost of $41,000, an estimated residual value of $2,600, and an estimated useful life of 32,000 machine hours. The company uses units-of-production depreciation and ran the machine 3,700 hours in year 1; 6,750 hours in year 2, and 7,800 hours in year 3 Calculate the net book value at the end of the third year. Net book value