The uncle of the garden wants to plant trees around a square square (trees are also planted at the four corners), and the distance between two adjacent trees is 4 meters. The garden uncle walks an average of 60 centimeters per step, and an average of 120 steps on each side. Smart children, do the math, how many trees will the garden uncle plant around this square?
园林叔叔要在一正方形广场的四周种树(四个角也要种树)，相邻两棵树相距4米．园林叔叔每步平均走60厘米，每边平均走120步，聪明的小朋友，算一算，园林叔叔要在这个广场的四周种上多少棵树？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4 / 4</gadget>
<output>1</output>

<gadget id="calculator">(3/5) * 120 * 1</gadget>
<output>72</output>

<result>72</result>