Aunt Fang’s salary in February 2013 was 3,800 yuan. After deducting 3,500 yuan, she paid personal income tax at a rate of 3%. How much should she pay?
方阿姨2013年2月的工资为3800元，扣除3500元后按3%的税率缴纳个人所得税，她应缴纳多少元．
<gadget id="calculator">3_800 - 3_500</gadget>
<output>300</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">300 * (1/20)</gadget>
<output>15</output>

<result>15</result>