There is a road with a length of 450 meters. Willow trees are planted every 18 meters at both ends. Three pagoda trees are planted at equal distances between the willow trees. How many trees are planted in total?
有一条公路长450米，每隔18米栽一棵柳树，两端都栽，在柳树之间以相等的距离栽3棵槐树，问共栽树多少棵．
<gadget id="calculator">450 / 18</gadget>
<output>25</output>

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

<gadget id="calculator">25 * 3</gadget>
<output>75</output>

<gadget id="calculator">26 + 75</gadget>
<output>101</output>

<result>101</result>