Use the commission schedule from Company B shown in the table to find the annual rate of interest earned on the investment. (Note: commissions are rounded to the nearest cent.)

Principal (Value of Stock)	Commission
Under $3,000	$32+1.8% of principal
$3,000 - $10,000	$56+1.% of principal
Over $10,000	$106+0.5% of principal

An investor purchases 157 shares at $37.58 a share, holds the stock for 257 days, and then sells the stock for $46.65 a share. Assume a 360-day year.

The annual rate of interest is_______%?

(Round to three decimal places.)