A rectangular pond is 140 meters long and 64 meters wide, and one tree is planted every 2 meters beside the pool. How many trees should be planted in total?
一个长方形的池塘，长140来，宽64米，在池边每隔2米种1棵树，一共需要种多少棵树？
<gadget id="calculator">140 * 2</gadget>
<output>280</output>

<gadget id="calculator">64 * 2</gadget>
<output>128</output>

<gadget id="calculator">280 + 128</gadget>
<output>408</output>

<gadget id="calculator">408 / 2</gadget>
<output>204</output>

<result>204</result>