I don't understand this. Please thoroughly explain. Im trying to complete with paper and pencil. Please fully explain how I show calculate not understanding how. P$5-22$ Present value of an annuity Consider the following cases.

a$.$ Calculate the present value of the annuity, assuming that it is

$(1)$ An ordinary annuity.

$(2)$ An annuity due.

b$.$ Compare your findings in parts a$(1)$ and a$(2).$ All else being identical, which type of annuity$-$

ordinary or annuity due$-$is preferable? Explain why.Carry all calculations to two decimal places to reduce rounding error, especially in multistep problems.