person deposits 5,000 yuan in the bank for two years, with an annual interest rate of 2.70%. After paying the 5% interest tax at maturity, how much is the after-tax interest?
某人将5000元存入银行，定期两年，年利率为2.70%，到期交了5%的利息税后，可得税后利息多少元．
<gadget id="calculator">2.7 / 100</gadget>
<output>0.027</output>

<gadget id="calculator">5_000 * 0.027 * 2</gadget>
<output>270</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">270 * (19/20)</gadget>
<output>513/2 = around 256.5</output>

<result>513/2 = around 256.5</result>