Plant trees on both sides of a 300-meter-long road (both ends are planted), and plant one tree every 5 meters. How many saplings are needed in total?
在一条长300米的公路两边植树(两端都栽)，每隔5米栽一棵，一共需要多少棵树苗．
<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>