Mr. Zhang has deposited 5,000 yuan in regular savings in the bank. If the annual interest rate is 3.68% and the interest tax is 5%, how much is the total of the principal and after-tax interest after depositing for 4 years?
张老师在银行存了定期储蓄5000元，如果年利率是3.68%，利息税为5%，存满4年时，本金和税后利息共是多少元？
<gadget id="calculator">3.68 / 100</gadget>
<output>0.0368</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">5_000 * 0.0368 * 4 * (19/20)</gadget>
<output>699.2</output>

<gadget id="calculator">5_000 + 699.2</gadget>
<output>5_699.2</output>

<result>5_699.2</result>