Carmen had 28 cats and 18 dogs before she gave 3 of the cats up for adoption. How many more cats than dogs does Carmen have now?
First find the number of cats Carmen has left: 28 cats - 3 cats = 
<gadget id="calculator">28-3</gadget>
<output>25</output>
25 cats.
Then subtract the number of dogs from the number of cats to find the difference: 25 cats - 18 dogs = 
<gadget id="calculator">25-18</gadget>
<output>7</output>
7 more cats.

<result>7</result>