Yingbin East Road has a total length of about 12 kilometers. It is planned to install a street lamp every 30 meters along the side of the Wulie River (both ends). If each street lamp costs 1,200 yuan, it will cost a total of How much is it?
迎宾东路全长约12千米，计划在沿武列河一侧每隔30米装一盏路灯(两端都装)，如果每盏路灯需花费1200元，这条路安装路灯共需要多少万元？
<gadget id="calculator">12 * 1_000</gadget>
<output>12_000</output>

<gadget id="calculator">12_000 / 30</gadget>
<output>400</output>

<gadget id="calculator">400 + 1</gadget>
<output>401</output>

<gadget id="calculator">401 * 1_200</gadget>
<output>481_200</output>

<result>481_200</result>