The area of a rectangle whose width is (7/2) centimeters is 14 square centimeters, what is its length in centimeters.
宽是(7/2)厘米的长方形的面积是14平方厘米，它的长是多少厘米．
<gadget id="calculator">7 / 2</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">14 / (7/2)</gadget>
<output>4</output>

<result>4</result>