Zhang Liang deposited 4,000 yuan at the post office on March 1, 2005, with an annual interest of 2.5. On March 1, 2010, how much was the total amount of the principal and after-tax interest he withdrawn (the interest is taxed at 5%)
张良2005年3月1日在邮局存了4000元，年息2.5，2010年3月1日他取出本金和税后利息一共多少元(利息按5%缴纳利息税)
<gadget id="calculator">2.5 / 100</gadget>
<output>0.025</output>

<gadget id="calculator">2_010 - 2_005</gadget>
<output>5</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">4_000 * 0.025 * 5 * (19/20)</gadget>
<output>475</output>

<result>475</result>