Deposit 50,000 yuan in the bank, and take out a total of 51,500 yuan after one year, excluding interest tax, so we can know the interest rate
在银行存款5万元，1年后共取出5.15万元，不计算利息税，由此可知利率为多少
<gadget id="calculator">5.15 - 5</gadget>
<output>0.15</output>

<gadget id="calculator">0.15 / 5 / 1</gadget>
<output>0.03</output>

<result>0.03</result>