A rectangle with a perimeter of 7.2 decimeters is composed of three squares of equal size. What is the perimeter of each square?
一个周长是7.2分米的长方形，它是由三个大小相等的正方形拼成的，每一个正方形的周长是多少分米．
<gadget id="calculator">7.2 / 8</gadget>
<output>0.9</output>

<gadget id="calculator">0.9 * 4</gadget>
<output>3.6</output>

<result>3.6</result>