From January 1, 2006, the personal income tax threshold has been adjusted from 800 yuan to 1,600 yuan. Uncle Zhang’s monthly salary income is 1,800 yuan. How much tax should be paid per month.
从2006年1月1日起，个人所得税起征点由过去的800元调整到1600元，张大伯月工资收入是1800元，他超出的工资部分如果按照5%缴税，那么张大伯现在每个月应该缴税多少元．
<gadget id="calculator">1_800 - 1_600</gadget>
<output>200</output>

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

<gadget id="calculator">200 * (1/20)</gadget>
<output>10</output>

<result>10</result>