Uncle Li deposited 5,000 yuan in the bank 3 years ago for 3 years, with an annual interest rate of 5.2%. This year several southwestern provinces of our country suffered severe drought, and he planned to donate all the interest he got to the disaster area when the deposit expired (the interest tax rate is 5%).
李大爷在3年前把5000元存入银行，定期3年，年利率是5.2%．今年我国西南几省发生特大旱灾，他准备在这笔存款到期时将获得的利息多少元全部捐给灾区(利息税率为5%)．
<gadget id="calculator">5.2 / 100</gadget>
<output>0.052</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">5_000 * 0.052 * 3 * (19/20)</gadget>
<output>741</output>

<result>741</result>