Mom deposits 300 yuan in the bank for five years. If the annual interest rate is 1.98%, after the maturity, she can withdraw the principal and the after-tax interest in total.
妈妈把300元钱存入银行，定期五年，如果年利率是1.98%，到期后，她可取出本金和税后利息一共多少元．
<gadget id="calculator">1.98 / 100</gadget>
<output>0.0198</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">300 * 0.0198 * 5 * (4/5)</gadget>
<output>23.76</output>

<gadget id="calculator">23.76 + 300</gadget>
<output>323.76</output>

<result>323.76</result>