Mom buys 3-year treasury bonds with 5,000 yuan. The annual interest rate is 5.58%.
妈妈用5000元购买3年期国债，年利率是5.58%，到期时妈妈一共可以兑换多少元．
<gadget id="calculator">5.58 / 100</gadget>
<output>0.0558</output>

<gadget id="calculator">5_000 * 0.0558 * 3</gadget>
<output>837</output>

<gadget id="calculator">5_000 + 837</gadget>
<output>5_837</output>

<result>5_837</result>