Teacher Shen buys 20,000 yuan of three-year government bonds with an annual interest rate of 3.5%. How much interest can she get after maturity?
沈老师买20000元的三年期国债年利率3.5%，到期后她能得到多少元利息．
<gadget id="calculator">3.5 / 100</gadget>
<output>0.035</output>

<gadget id="calculator">20_000 * 0.035 * 3</gadget>
<output>2_100</output>

<result>2_100</result>