There is a section of 80-meter-long street where street lights are installed on one side. Both ends of the street must be installed, and one is installed every 8 meters in the middle. How many street lights should be installed on the side of this section of the street.
有一段长80米的街道一旁安装路灯，街道的两端都要安装，中间每隔8米安装一盏，这段街道一旁要安装多少盏路灯．
<gadget id="calculator">80 / 8</gadget>
<output>10</output>

<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<result>11</result>