A rectangle is 2 decimeters wide and 1.8 decimeters shorter than its length. What is the area of this rectangle?
一个长方形宽是2分米，比长短1.8分米，这个长方形的面积是多少平方分米？
<gadget id="calculator">2 + 1.8</gadget>
<output>3.8</output>

<gadget id="calculator">3.8 * 2</gadget>
<output>7.6</output>

<result>7.6</result>