John buys 4 pounds of beef.  He uses all but 1 pound in soup.  He uses twice as many pounds of vegetables as beef.  How many pounds of vegetables did he use?
He used 4-1=
<gadget id="calculator">4-1</gadget>
<output>3</output>
3 pounds of beef.
So he used 3*2=
<gadget id="calculator">3*2</gadget>
<output>6</output>
6 pounds of vegetables.

<result>6</result>