There is a triangular piece of land, the lengths of the three sides are 120 meters, 150 meters, and 80 meters respectively. A tree is planted every 10 meters on the border. Every vertex of the triangle must be planted. How many trees will be planted in total?
有一块三角形土地，三条边的长度分别为120米、150米、80米，在边界上每隔10米种一棵树，三角形的每个顶点都必须种，一共要种多少棵树？
<gadget id="calculator">80 + 120 + 150</gadget>
<output>350</output>

<gadget id="calculator">350 / 10</gadget>
<output>35</output>

<result>35</result>