PEARSON Cоrp. оwes WILEY Inc. $400,000 fоr unpаid invoices. On August 1, 2024, PEARSON restructured its debt to WILEY by signing а note with а principal of $400,000 and 8% rate. The note is due in nine months. On that date, what is the maturity amount that PEARSON is obligated to pay back to WILEY?