A group of colorful lights is composed of red, green and yellow lights. The red light is on every 3 seconds, the green light is on every 5 seconds, and the yellow light is on every 8 seconds. light up?
一组彩灯由红灯、绿灯和黄灯组成，红灯每3秒亮一次，绿灯每5秒亮一次，黄灯每8秒亮一次，在同时亮过一次后，几秒钟又能同时亮起？
<gadget id="calculator">3 * 5 * 8</gadget>
<output>120</output>

<result>120</result>