The area of a rectangle is 4.14 square decimeters, its width is 1.8 decimeters, what is its length?
一个长方形面积是4.14平方分米，它的宽是1.8分米，长是多少．
<gadget id="calculator">4.14 / 1.8</gadget>
<output>2.3</output>

<result>2.3</result>