Ariel would like to borrow $$170,000$ to buy a house. Her parents have offered to help by giving her the money over a $15-$year period if she would pay the same rate that their CD pays at the bank, which is $5\mathrm{.}5\%$ per year. Ariel would like to make monthly payments to her parents and also make a balloon payment to them for $$60,000.$ What would her monthly payments be$?$