Mom deposits 30,000 yuan in the bank for three years, with an annual interest rate of 5.50%. When the maturity expires, how much will the mother get back the principal and interest from the bank?
妈妈存入银行30000元，定期三年，年利率是5.50%，到期时妈妈从银行取回本息多少元．
<gadget id="calculator">5.5 / 100</gadget>
<output>0.055</output>

<gadget id="calculator">30_000 * 0.055 * 3</gadget>
<output>4_950</output>

<gadget id="calculator">30_000 + 4_950</gadget>
<output>34_950</output>

<result>34_950</result>