The width of a rectangle is 5 cm, and the length is 8 times the width. What is the area of the rectangle?
一个长方形的宽是5厘米，长是宽的8倍，长方形的面积是多少？
<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<gadget id="calculator">40 * 5</gadget>
<output>200</output>

<result>200</result>