Need help with these 2 questions.

What amount will reduce the amount due on an invoice of $3236.14 by $1072.87 if the terms of the invoice are 5/10, n/30 and the payment was made during the discount period? The payment amount is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) Arrow Manufacturing offers discounts of 16%, 13.5%, 6% on a line of products. For how much should an item be listed if it is to be sold for $312.93? The item should be listed for $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)