Brittany has 3 gerbils: Puffy, Muffy, and Scruffy. Puffy weighs 5 ounces more than Muffy. Muffy weighs 3 ounces less than Scruffy.  If Scruffy weighs 12 ounces, how much would the scale indicate, in ounces, if Brittany put Puffy and Muffy on the scale?
Muffy weighs 12 - 3 = 
<gadget id="calculator">12-3</gadget>
<output>9</output>
9 ounces.
Puffy weighs 5 + 9 = 
<gadget id="calculator">5+9</gadget>
<output>14</output>
14 ounces.
If Brittany weighs both Puffy and Muffy, the scale would read 9 + 14 = 
<gadget id="calculator">9+14</gadget>
<output>23</output>
23 ounces.

<result>23</result>