cant figure out what dividend is (dp) is in order to answer question... please help

3. Flax can also issue New Preferred Stock paying a 7% dividend coupon on $25 par at a price =$24.56 per share. Flotation costs for issuing new Preferred Stock is equal to 5% of the sales price. Dividends are paid once per year. Estimate the cost of New Preferred Stock with flotation costs (Rp). RP=DP(1f)(Pp)DP(1.05)(24.56)