The company issued a three$-$year$-$zero$-$interest$-$bearing note $$30,000$ to a customer to borrow cash. The market interest rate is $7\%.$

$1.$ If the company will pay $$10,000$ at the end of each of the three years, please calculate the present value of the note $($compounded annually and rounded to the nearest dollar$).$

$2.$ If the company will pay $$10,000$ at the beginning of each of the three years, please calculate the present value of the note $($compounded annually and rounded to the nearest dollar$).$

$3.$ If the company will pay $$15,000$ at the end of the second and third years, please calculate the present value of the note $($compounded annually and rounded to the nearest dollar$).$