4 workers produce 100 TV parts in 5 hours. According to this calculation, how many workers are needed to produce 600 TV parts in 8 hours?
4个工人5小时生产100个电视机零件，照这样计算，要在8小时内生产600个电视机零件，需要多少个工人？
<gadget id="calculator">100 / 5 / 4</gadget>
<output>5</output>

<gadget id="calculator">600 / 8 / 5</gadget>
<output>15</output>

<result>15</result>