Shenyu Township planted trees on both sides of the newly built 2,700-meter-long street, one tree every 3 meters, and both ends. How many saplings are needed?
神峪乡在新建的长2700米的街道两旁栽树，每隔3米种1棵，两头都栽，需要树苗多少棵？
<gadget id="calculator">2_700 / 3</gadget>
<output>900</output>

<gadget id="calculator">900 + 1</gadget>
<output>901</output>

<gadget id="calculator">901 * 2</gadget>
<output>1_802</output>

<result>1_802</result>