In order to curb inflation, the government adjusts the deposit interest rate: the annual interest rate of one-year deposits is 4.14%, and the interest tax is reduced to 5%. Mom deposits 30,000 yuan in the bank. How much can she withdraw from the principal and interest when it matures?
政府为抑制通货膨胀，调整存款利率：一年期存款年利率为4.14%，利息税降为5%，妈妈把30000元存入银行，到期时她可以取出本金和利息共多少元？
<gadget id="calculator">4.14 / 100</gadget>
<output>0.0414</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">30_000 * 0.0414 * 1 * (19/20)</gadget>
<output>1_179.9</output>

<gadget id="calculator">1_179.9 + 30_000</gadget>
<output>31_179.9</output>

<result>31_179.9</result>