The young pioneers planted a 100-meter-long sidewalk and planted trees every 4 meters from the beginning to the end. How many trees should be planted in total?
少先队员们栽一条长100米的人行道上植树，从头到尾每隔4米植一棵，共要植树多少棵．
<gadget id="calculator">100 / 4</gadget>
<output>25</output>

<gadget id="calculator">25 + 1</gadget>
<output>26</output>

<result>26</result>