The deposit is 5,000 yuan, and the annual interest rate of the one-year time deposit is 3.87%. How much is the after-tax interest after one year?
存款5000元，一年定期存款的年利率是3.87%，一年后应得税后利息多少元．
<gadget id="calculator">3.87 / 100</gadget>
<output>0.0387</output>

<gadget id="calculator">5_000 * 0.0387 * 1</gadget>
<output>193.5</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">193.5 * (19/20)</gadget>
<output>183.825</output>

<result>183.825</result>