The ratio of old, middle-aged and young workers in a factory is 2:5:8. There are 60 fewer old workers than young workers. How many middle-aged workers are there?
某工厂老、中、青工人的比是2：5：8，老工人比青年工人少60人，中年工人有多少人？
<gadget id="calculator">8 - 2</gadget>
<output>6</output>

<gadget id="calculator">60 / 6</gadget>
<output>10</output>

<gadget id="calculator">10 * 5</gadget>
<output>50</output>

<result>50</result>