Aunt Zhang deposited 5,000 yuan in the bank on June 30 this year for three years, with an annual interest rate of 2.70%. How much tax will she pay on the interest when it is due?
张阿姨今年6月30日到银行存了5000元钱，定期三年，年利率是2.70%．到期时，她应缴纳多少元利息税？
<gadget id="calculator">2.7 / 100</gadget>
<output>0.027</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">5_000 * 0.027 * 3 * (1/5)</gadget>
<output>81</output>

<result>81</result>