Master Wang's taxable income this month is 640 yuan, how much is it if he pays personal income tax at a 3% tax rate.
王师傅本月的应纳税所得额是640元，如果按3%的税率缴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">640 * (3/100)</gadget>
<output>96/5 = around 19.2</output>

<result>96/5 = around 19.2</result>