Garden workers planted trees on both sides of the 400-meter-long road. If both ends are loaded, one tree is loaded every 4 meters, how many trees can be loaded in total.
园林工人在长400米的路两旁栽树．如果两端都载，每隔4米载一棵，一共可以载多少棵．
<gadget id="calculator">400 / 4</gadget>
<output>100</output>

<gadget id="calculator">100 + 1</gadget>
<output>101</output>

<gadget id="calculator">101 * 2</gadget>
<output>202</output>

<result>202</result>