The ratio of managers to workers in a factory is 2:7, and there are 270 people in this factory, so how many managers are there?
一个工厂管理者与工人的比是2：7，这个工厂共有270人，那么管理者有多少人？
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">(2/7) * 270</gadget>
<output>540/7 = around 77.142857</output>

<gadget id="calculator">1 + (2/7)</gadget>
<output>9/7 = around 1.285714</output>

<gadget id="calculator">(540/7) / (9/7)</gadget>
<output>60</output>

<result>60</result>