The park should be on one side of a 120-meter-long road, and a bench should be placed every 10 meters for tourists to rest. A chair should be placed at the beginning and end of the road. How many chairs should be prepared in the park?
公园要在一条长120米的道路的一侧，每隔10米放一张长椅供游客休息，道路的起点和终点都各放一张椅子，公园里要准备多少张椅？
<gadget id="calculator">120 / 10</gadget>
<output>12</output>

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

<result>13</result>