To purchase $13,400 worth of machinery for her business, Kala made a down payment of $1400 and took out a business loan for the rest. After 3 years of paying monthly payments of $365.07, she finally paid off the loan.

(a) What was the total amount Kala ended up paying for the machinery
(including the down payment and monthly payments)?
$

(b) How much interest did Kala pay on the loan?
$