Mark Ventura has just purchased an annuity to begin payment two years from today. The annuity is for $18,000 per year and is designed to last 6 years. If the interest rate for this problem calculation is 13 percent, what is the most he should have paid for the annuity? Use Appendix B and Appendix D for an approximate answer, but calculate your final answer using the formula and financial calculator methods. (Do not round intermediate calculations. Round your final answer to 2 decimal places.) Maximum payment