Javier and Anita Sanchez purchased a home on January 1, 2018, for $635,000 by paying $211,667 down and borrowing the remaining $423,333 with a 6 percent loan secured by the home. The loan requires interest-only payments for the first five years. The Sanchezes would itemize deductions even if they did not have any deductible interest. The Sanchezes marginal tax rate is 32 percent. (Round your intermediate calculations to the nearest whole dollar amount.) a. What is the after-tax cost of the interest expense to the Sanchezes in 2018? b. Assume the original facts, except that the Sanchezes rent a home and pay $25,400 in rent during the year. What is the after-tax cost of their rental payments in 2018?