Trees are planted on both sides of the path in front of the school. It is known that the path is 200 meters long and the distance between two adjacent trees is 4 meters. How many trees are there in the path?
学校门前的小路两旁，从头到尾都栽满树，已知小路长200米，相邻两棵树之间的距离是4米，问小路上一共有多少棵树．
<gadget id="calculator">200 / 4</gadget>
<output>50</output>

<gadget id="calculator">50 + 1</gadget>
<output>51</output>

<gadget id="calculator">51 * 2</gadget>
<output>102</output>

<result>102</result>