A rectangle is 18 meters wide and four times as long as it is wide. What is the perimeter of the rectangle in meters?
一个长方形，宽18米，长是宽的4倍，这个长方形的周长是多少米？
<gadget id="calculator">18 * 4</gadget>
<output>72</output>

<gadget id="calculator">72 + 18</gadget>
<output>90</output>

<gadget id="calculator">90 * 2</gadget>
<output>180</output>

<result>180</result>