Li Xin's family deposited 4,000 yuan in the bank on May 1, 2006, for two years with an annual interest rate of 2.5%. The interest tax rate is 5%. How much after-tax interest will Li Xin’s family get when the withdrawal is due?
李欣家2006年5月1日把4000元钱存入银行，定期二年，年利率是2.5%．利息税率为5%，到期取款时，李欣家得到税后利息多少元？
<gadget id="calculator">2.5 / 100</gadget>
<output>0.025</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">4_000 * 0.025 * 2 * (19/20)</gadget>
<output>190</output>

<result>190</result>