Plant some trees equidistantly around a rectangular lawn with a length of 348 meters and a width of 240 meters. It is required that exactly one tree can be planted around and in the middle of each side, and the number of trees planted should be as few as possible. So how many saplings should be bought at least?
在一个长348米，宽240米的长方形草坪四周等距离的栽一些树，要求四周和每边正中都正好能栽一棵，并且栽的棵树尽可能少，那么最少要买多少棵树苗？
<gadget id="calculator">348 + 240</gadget>
<output>588</output>

<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">2 / 6</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">588 * (1/3)</gadget>
<output>196</output>

<result>196</result>