Grandma Liu purchased 40,000 yuan of three-year treasury bonds with an annual rate of 3.7% from the bank, and agreed to collect interest once a year. How much interest should she get each year?
刘奶奶从银行购得年率为3.7%的三年期国债40000元，约定每年取一次利息，每年应得利息多少元？
<gadget id="calculator">3.7 / 100</gadget>
<output>0.037</output>

<gadget id="calculator">40_000 * 0.037 * 1</gadget>
<output>1_480</output>

<result>1_480</result>