Xiao Ming's father has deposited 5,000 yuan in the bank for two years. If the annual interest rate is 2.7%, when the maturity is due, after paying the interest tax at 5%, how much is the after-tax interest his family can get.
小明的爸爸在银行里存了5000元，定期两年，如果年利率是2.7%，到期时，按5%缴纳利息税后，他家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>