The road is 150 meters long, and poplar trees are planted every 10 meters from the beginning to the end. How many trees should be planted in total?
路长150米，从头到尾每隔10米种1棵白杨树，一共要种几棵树？
<gadget id="calculator">150 / 10</gadget>
<output>15</output>

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

<result>16</result>