A street is 150 meters long, and street lights are installed on both sides of the road (both ends are installed), and a street light is installed every 10 meters. How many street lights need to be installed in total?
一条街道长150米，在道路的两侧分别安装路灯(两端都要安装)，每隔10米安装一盏路灯，一共需要安装多少盏路灯？
<gadget id="calculator">150 / 10</gadget>
<output>15</output>

<gadget id="calculator">15 + 1</gadget>
<output>16</output>

<gadget id="calculator">16 * 2</gadget>
<output>32</output>

<result>32</result>