The perimeter of a rectangle is 36cm and the width is 6cm. What is its area in cm**2.
一个长方形的周长是36cm，宽是6cm，它的面积是多少cm**2．
<gadget id="calculator">36 / 2</gadget>
<output>18</output>

<gadget id="calculator">18 - 6</gadget>
<output>12</output>

<gadget id="calculator">12 * 6</gadget>
<output>72</output>

<result>72</result>