What would be the principal in this case? PV of principal, pv of interest and amortization table?

10) 11/1/x2: Harrison completed excavation work for one of its customers. The following payment terms were arranged on 11/1/x2: Quarterly payments: $ 6,000 Date of first payment: 11/1/x2 Date of last payment: 8/1/x4 Effective annual interest rate: 10% This note is referred to as Note Receivable "2". The effective interest method of amortization is used. The revenue is recorded in the company's "Sales" account