May someone explain how to p-repar-e a require note disclosure for long-term debt, please?

(p-repar-e = prepare. It wouldn't let me submit it if I left it that way for that one sentence).

Here is an example problem:

"E14-20 Long-Term Debt Disclosure

At December 31, Year 1, Redmond Company has outstanding 3 long-term debt issues. The first is a $2,000,000 note payable which matures June 30, Year 4. The second is a $6,000,000 bond issue which matures September 30, Year 5. The third is a $12,500,000 sinking fund debenture with annual sinking fund payments of $2,500,000 in each of the years Year 3 through Year 6.

Instructions: Prepare the required note disclosure for the long-term debt at December 31, Year 1.

At December 31, Year 1, disclosures would be as follows: Maturities and sinking fund requirements on long-term debt are as follows:

Year 2 $ 0

Year 3 $2,500,000

Year 4 $4,500,000 (2,000,000 + 2,500,000)

Year 5 $8,500,000 (6,000,000 + 2,500,000)

Year 6 $2,500,000"

This one has the answers already but I was hoping someone could explain the process to me and provide an explanation as well please.