Anbsp what is the present year 0 value if the opportunity

Question

9.6 Consider the following uneven cash flow stream:

                                    Year                Cash Flow

                                       0                         $ 0

                                       1                        250

                                       2                        400

                                       3                        500

                                       4                        600

                                       5                        600

     A.  What is the present (Year 0) value if the opportunity cost (discount) rate is 10 percent?

    B.  Add the outflow (or cost) of $1,000 at Year 0.  What is the present value (or net present value) of the stream?

*******Please list the answer step by step so I can understand the answer.