The area of a rectangle is 36 square centimeters. If the length is 9 cm, what is its width in cm?
一个长方形的面积是36平方厘米．长是9厘米，则它的宽是多少厘米．
<gadget id="calculator">36 / 9</gadget>
<output>4</output>

<result>4</result>