Jennifer has a bond and a stock with a combined value of $1,600. The bond makes annual coupons starting next year and has a coupon rate of 6%. The bond also has a yield to maturity of 12%, a par value of $1,000, and matures in a decade. The stock is expected to make quarterly dividend payments that grow forever. The first payment of $6 is expected in one year, and the rate of return is 24%. What is the quarterly growth rate of the stock's dividends?