The annual interest rate of the three-year treasury bill is 2.5%. If my mother buys 60,000 yuan of treasury bills, she will get ten thousand yuan in interest when it expires.
三年期国库券的年利率是2.5%，妈妈购买国库券6万元，到期时可得利息多少万元．
<gadget id="calculator">6 * 10_000</gadget>
<output>60_000</output>

<gadget id="calculator">2.5 / 100</gadget>
<output>0.025</output>

<gadget id="calculator">60_000 * 0.025 * 3</gadget>
<output>4_500</output>

<result>4_500</result>