There are 600 people in a factory, and the ratio of female workers to male workers is 2:3. Later, a group of male workers are recruited, and the ratio of female workers to male workers is 3:7. How many male workers did this factory recruit?
一个工厂有600人，其中女工与男工人数的比是2：3，后来又招进一批男工，这时女工与男工人数的比3：7．这个工厂又招进男工多少人？
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3 + 7</gadget>
<output>10</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(2/5) / (3/10)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">600 * (4/3)</gadget>
<output>800</output>

<gadget id="calculator">800 - 600</gadget>
<output>200</output>

<result>200</result>