A three-year national debt has an annual interest rate of 3.73%. Aunt Wang bought this kind of national debt for 40,000 yuan. How much interest can she get when it matures? (Exemption from interest tax)
一种三年期的国债年利率是3.73%，王阿姨买了这种国债4万元，到期可得利息多少元．(免交利息税)
<gadget id="calculator">4 * 10_000</gadget>
<output>40_000</output>

<gadget id="calculator">3.73 / 100</gadget>
<output>0.0373</output>

<gadget id="calculator">40_000 * 0.0373 * 3</gadget>
<output>4_476</output>

<result>4_476</result>