Uncle Wang wants to plant trees on both sides of the 1 kilometer road (both ends), one tree every 5 meters, how many trees will be planted in total?
王叔叔要在1千米的道路两旁植树(两头都种)，每隔5米种一棵，一共要种多少棵？
<gadget id="calculator">1_000 / 5</gadget>
<output>200</output>

<gadget id="calculator">1 * 200</gadget>
<output>200</output>

<gadget id="calculator">200 + 1</gadget>
<output>201</output>

<gadget id="calculator">201 * 2</gadget>
<output>402</output>

<result>402</result>