A rectangle is 1.6 meters wide and its length is 1.5 times its width. What is the perimeter of the rectangle?
一个长方形宽是1.6米，长是宽的1.5倍，这个长方形的周长是多少？
<gadget id="calculator">1.6 * 1.5</gadget>
<output>2.4</output>

<gadget id="calculator">1.6 + 2.4</gadget>
<output>4</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>