In 2011, my country announced a new personal income tax collection standard, and no tax is levied on personal monthly income below 3,500 yuan. If the monthly income exceeds 3,500 yuan, personal income tax will be levied at 3% if the excess part does not exceed 1,500 yuan; personal income tax will be levied at 10% if the monthly income exceeds 1,500 yuan to 4,500 yuan. Teacher Zhang pays 55 yuan in taxes every month. How much is his monthly income?
2011年我国公布了新的个人收入所得税征收标准，个人月收入3500元以下不征税．月收入超过3500元，超过部分不超过1500元的按3%征收个人所得税；超过1500元至4500元的部分按10%征收个人所得税．张老师每月缴纳55元的税款，他一个月收入是多少元？
<gadget id="calculator">3 / 100</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">1_500 * (3/100)</gadget>
<output>45</output>

<gadget id="calculator">55 - 45</gadget>
<output>10</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">10 / (1/10)</gadget>
<output>100</output>

<gadget id="calculator">1_500 + 100 + 3_500</gadget>
<output>5_100</output>

<result>5_100</result>