Teacher Zhang deposits 20,000 yuan in the bank for 2 years, with an annual interest rate of 2.32%. 20% interest tax is required to be paid when the interest is withdrawn after maturity. How much interest can be obtained after tax?
张老师把20000元钱存入银行，定期2年，年利率为2.32%．到期后取利息时需交利息税20%，税后可得利息多少元？
<gadget id="calculator">2.32 / 100</gadget>
<output>0.0232</output>

<gadget id="calculator">20_000 * 0.0232 * 2</gadget>
<output>928</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">928 * (4/5)</gadget>
<output>3_712/5 = around 742.4</output>

<result>3_712/5 = around 742.4</result>