Jake makes a drink that is 2 parts Coke, 1 part Sprite and 3 parts Mountain Dew.  If the drink contains 6 ounces of Coke, how many ounces is the drink?
The drink is 2+1+3=
<gadget id="calculator">2+1+3</gadget>
<output>6</output>
6 parts.
The drink is 2/6=1/3 coke.
So the drink is 6/(1/3)=
<gadget id="calculator">6/(1/3)</gadget>
<output>18</output>
18 ounces.

<result>18</result>