There is a 200-meter-long avenue at the gate of the school. The school wants to plant willow trees on both sides of the avenue. If one tree is planted every 5 meters, both ends must be planted. How many willow trees will be placed in total?
校门口有一条长200米的大道，学校想在大道的两旁载上柳树，如果每隔5米栽一棵，两头都要栽，一共要载多少棵．
<gadget id="calculator">200 / 5</gadget>
<output>40</output>

<gadget id="calculator">40 + 1</gadget>
<output>41</output>

<gadget id="calculator">41 * 2</gadget>
<output>82</output>

<result>82</result>