Trees are planted around the square fish pond, and one tree is planted at each of the four vertices. In this way, there are 22 trees on each side. How many trees are planted in total?
在正方形鱼塘四周种上树，四个顶点都种有一棵，这样每边都有22棵树，四周共种多少棵树？
<gadget id="calculator">22 * 4</gadget>
<output>88</output>

<gadget id="calculator">88 - 4</gadget>
<output>84</output>

<result>84</result>