Xiaoming's family has deposited 5,000 yuan in the bank for two years. If the annual interest rate is 3.4%, when it is due, if the interest tax is paid at 5%, how much after-tax interest can his family get.
小明家在银行存了5000元，定期两年，如果年利率是3.4%，到期时，如果按5%缴纳利息税后，他家共可得税后利息多少．
<gadget id="calculator">3.4 / 100</gadget>
<output>0.034</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 * 0.034 * 2 * (19/20)</gadget>
<output>323</output>

<result>323</result>