In January 2008, the three-year lump sum deposit and withdrawal deposit annual interest rate was 5.40%. 5% interest tax is payable. Li Ming saved 1,000 yuan, and the whole deposit is withdrawn for three years. How much after-tax interest can he get when it matures?
2008年1月，三年期整存整取的存款年利率是5.40%．要缴纳5%的利息税．李明存了1,000元钱，整存整取三年，到期时可得税后利息多少元．
<gadget id="calculator">5.4 / 100</gadget>
<output>0.054</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">1_000 * 0.054 * 3 * (19/20)</gadget>
<output>153.9</output>

<result>153.9</result>