In order to make it easier for citizens to enjoy the lake and water, the municipal company built a 2,400-meter-long hydrophilic plank road beside the lake in the park, and installed a solar viewing light every 40 meters on the side of the plank road. Now considering the cost, it is decided to change it to every 60 meters. Pack one cup of rice, except for the starting point, how far is the first one that does not need to be moved from the starting point?
为了方便市民观赏湖光水色，市政公司在公园湖边修建了一条2400米长的亲水栈道，在栈道的一旁每隔40米安装一盏太阳能观景灯，现在考虑成本，决定改为每60米装一盏，除了起点外，第一盏不用移动的离起点有多少远？
<gadget id="calculator">2 * 2 * 2 * 3 * 5</gadget>
<output>120</output>

<result>120</result>