The rug is 5 feet wider than the chair. The couch is 2 feet longer than twice the width of the rug. If the chair is 3 feet wide. How many feet long is the couch?
Chair = 
<gadget id="calculator">3</gadget>
<output>3</output>
3 feet.
Rug = 3 + 5 = 
<gadget id="calculator">3+5</gadget>
<output>8</output>
8 feet.
Couch = 2 * 8 + 2 = 
<gadget id="calculator">2*8+2</gadget>
<output>18</output>
18 feet.
The couch is 
<gadget id="calculator">18</gadget>
<output>18</output>
18 feet long.

<result>18</result>