(1) Assuming that the interest rate for a one-year deposit is 10% today, we want to deposit some money in the bank so that in a year's time we will have 1000 yuan with interest and principal. How much should we save? (Please keep two decimal places for the calculation results)

(2) According to the calculation, if the value of an asset in one year is FV., and the discount rate is r, what is the present value of the asset, PVI?

(3) If the value of a certain asset after n years is FV. , the discount rate is still R, then the present value of the asset is PV. For how many?