Xiao Ming deposited 480 yuan in current savings in the bank. If the annual interest rate is 0.72%, how much is the total principal and after-tax interest when the deposit period is half a year?
小明在银行存了活期储蓄480元．如果年利率是0.72%，存期半年时，本金和税后利息一共多少元？
<gadget id="calculator">1.64 + 480</gadget>
<output>481.64</output>

<result>481.64</result>