Mom has deposited 5,000 yuan in the bank for one year, and the annual interest rate is 5.2%. According to the national regulations, 5% interest tax should be paid. How much after-tax interest can mother get when it expires?
妈妈在银行存了5000元，定期一年，年利率是5.2%，根据国家规定还应缴纳5%的利息税，到期时，妈妈可得到税后利息多少元？
<gadget id="calculator">5.2 / 100</gadget>
<output>0.052</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">5_000 * 0.052 * 1 * (19/20)</gadget>
<output>247</output>

<result>247</result>