Laoshan mountaineering competition is held, and the organizing committee sets up a service station every 65 meters on the 845-meter-long mountain road (the starting point and the ending point are not set). How many service stations are there in total?
崂山举行登山大赛，组委会在长达845米的山路中，每隔65米设置一个服务站(起点和终点不设)．共设多少个服务站？
<gadget id="calculator">845 / 65</gadget>
<output>13</output>

<gadget id="calculator">13 - 1</gadget>
<output>12</output>

<result>12</result>