If two squares with a perimeter of 24 decimeters are put together to form a rectangle, what is the perimeter of the rectangle?
两个周长是24分米的正方形拼成一个长方形，这个长方形的周长是多少分米．
<gadget id="calculator">24 / 4</gadget>
<output>6</output>

<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">12 + 6</gadget>
<output>18</output>

<gadget id="calculator">18 * 2</gadget>
<output>36</output>

<result>36</result>