Xiao Ming's father deposited 10,000 yuan in the bank on May 1, 2006. The annual interest rate is 1.98%, and the interest tax is 20%. On May 1, 2007, how much did he withdraw the principal and after-tax interest?
小明的爸爸2006年5月1日将10000元钱存入银行，年利率是1.98%，利息税20%．2007年5月1日他取出本金和税后利息共多少元？
<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">10_000 * 0.0198 * 1 * (4/5)</gadget>
<output>158.4</output>

<gadget id="calculator">10_000 + 158.4</gadget>
<output>10_158.4</output>

<result>10_158.4</result>