Use TI BA calculator, DON'T USE FORMULAS

Net returns from an investment are estimated to be $13,000 per year for 12 years. The investment involves an immediate outlay of $50,000 and a further outlay of $30,000 after 6 years. The investments are estimated to have a residual value of $10,000 after 12 years. Find the net present value at 20%. (10 marks)