On a 60-meter-long road, plant a poplar every 6 meters (both ends are planted). If only one side is planted, how many saplings are needed?
在一条长60米的公路上，每隔6米种一棵杨树(两端都种)．如果只种一侧，需要多少棵树苗．
<gadget id="calculator">60 / 6</gadget>
<output>10</output>

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

<result>11</result>