Liu Qiang's father's taxable income last month was 600 yuan. If he pays personal income tax at a rate of 3%, how much should he pay in personal income tax?
刘强的爸爸上个月的应纳税所得额为600元，如果按3%的税率缴纳个人所得税，应纳个人所得税多少元．
<gadget id="calculator">3 / 100</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">600 * (3/100)</gadget>
<output>18</output>

<result>18</result>