For a 300-meter-long road, only one tree is planted at 5 meters on both sides of the road, and one tree at each end. How many trees are planted in total?
一条长300米的公路，在公路两侧5米才种一棵树，两端各一棵，共植多少棵？
<gadget id="calculator">300 / 5</gadget>
<output>60</output>

<gadget id="calculator">60 + 1</gadget>
<output>61</output>

<gadget id="calculator">61 * 2</gadget>
<output>122</output>

<result>122</result>