Xiao Ming deposits 200 yuan in the bank for 3 years, with an annual interest rate of 2.7%. How much after-tax interest can he get when it matures?
小明把200元存入银行，定期3年，年利率2.7%，到期时，他可得到多少元的税后利息．
<gadget id="calculator">2.7 / 100</gadget>
<output>0.027</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">200 * 0.027 * 3 * (19/20)</gadget>
<output>15.39</output>

<result>15.39</result>