When a party as tenant for life is entitled to the annual interests on a sum of money, or is entitled to the use of any estate, or a part thereof, and is willing to accept a gross sum in lieu thereof, or the party liable for such interest, or affected by such claim, has the right to pay a gross sum in lieu thereof, or if the court in any legal proceeding orders a gross sum to be paid in lieu thereof, the sum shall be estimated according to the then value of an annuity of eight percent on the principal sum during the probable life of such person, according to the following table, showing in Column I the present value, on the basis of eight percent interest, of an annuity of $1, payable at the end of every year that a person of a given age may be living, for the ages therein stated: PRESENT VALUE