Often, through​ government-supported programs, students may obtain​ "bargain" interest rates such as​ 6% or​ 8% to attend college.​ Frequently, payments are not due and interest does not accumulate until the student stops attending college. A student has borrowed ​$42 comma 000 at an annual interest rate of 6.4​%. Calculate the amount of interest due 6 months after the student must begin payments.