Xiaofang deposits 250 yuan of New Year's money in the bank for a period of three years. If the annual interest rate is 5.40%, how much yuan can he get back the principal and after-tax interest when it matures? (Interest is taxed at a rate of 5%)
小方把250元压岁钱存入银行，存期为三年，如年利率为5.40%，到期时，他可取回本金和税后利息一共多少元？(利息按5%的税率纳税)
<result>288.48</result>