Dad saved 4,000 yuan for five years. If the annual interest rate is 5.5%, how much interest can he get when it matures?
爸爸存了4000元人民币，定期五年，如果年利率为5.5%，到期时可以获得利息多少元．
<gadget id="calculator">5.5 / 100</gadget>
<output>0.055</output>

<gadget id="calculator">4_000 * 0.055 * 5</gadget>
<output>1_100</output>

<result>1_100</result>