Use five identical squares to form a rectangle. The perimeter of the rectangle is 12 cm. What is the perimeter of each square in cm?
用五个完全一样的正方形拼成一个长方形，拼成的长方形的周长是12厘米，每个正方形的周长是多少厘米
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<gadget id="calculator">10 + 2</gadget>
<output>12</output>

<gadget id="calculator">12 / 12</gadget>
<output>1</output>

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

<result>4</result>