The duration of a bank's portfolio of assets is 9 years; the interest rate has recently decreased by 3/5 of a percentage point, increasing the value of the portfolio 4.5%. If the portfolio is now valued at $6.7 million, determine the value of the portfolio before the change in the interest rate. Determine the interest rate at which the portfolio was originally priced (i.e., the level of the interest rate before its change).