Lao Li deposited 1,000 yuan in the bank as a one-year lump sum deposit and withdrawal. The annual interest rate is 3.87%, and the interest tax is 5%.
老李把1000元钱按一年期整存整取存入银行，年利率是3.87%，利息税是5%，到期时可得税后利息多少元．
<gadget id="calculator">3.87 / 100</gadget>
<output>0.0387</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 * 0.0387 * 1 * (19/20)</gadget>
<output>36.765</output>

<result>36.765</result>