Plant a greening tree every 100 meters on both sides of a 1000-meter-long road, at least how many saplings should be prepared.
在一条1000米长的公路两边每隔100米种一棵绿化树，至少要准备多少棵树苗．
<gadget id="calculator">1_000 / 100</gadget>
<output>10</output>

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

<gadget id="calculator">11 * 2</gadget>
<output>22</output>

<result>22</result>