Lao Li deposits 5,000 yuan in the bank as a two-year lump sum deposit and withdrawal. The annual interest rate is 4.50%, and the interest tax is 5%.
老李把5000元钱按二年期整存整取存入银行，年利率是4.50%，利息税是5%，到期时可得税后利息多少元．
<gadget id="calculator">4.5 / 100</gadget>
<output>0.045</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 * 0.045 * 2 * (19/20)</gadget>
<output>427.5</output>

<result>427.5</result>