What is the area of a rectangle formed by 2 small squares with side lengths of 3 decimeters?
2个边长是3分米的小正方形拼成的长方形的面积是多少平方分米．
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<result>18</result>