Matt has six cats and half of them are female. If each female cat has 7 kittens, and Matt sells 9 of them, what percentage of his remaining cats are kittens (rounded to the nearest percent)?
First find the number of cats that are females: 6 cats / 2 = 
<gadget id="calculator">6/2</gadget>
<output>3</output>
3 cats.
Then find the total number of kittens born: 7 kittens/cat * 3 cats = 
<gadget id="calculator">7*3</gadget>
<output>21</output>
21 kittens.
Then subtract the 9 kittens that were sold: 21 kittens - 9 kittens = 
<gadget id="calculator">21-9</gadget>
<output>12</output>
12 kittens.
Then add the number of kittens to the number of adult cats to find the total number of cats: 12 kittens + 6 cats = 
<gadget id="calculator">12+6</gadget>
<output>18</output>
18 cats.
Then divide the number of kittens by the total number of cats and multiply by 100% to find the percentage of cats that are kittens: 12 kittens / 18 cats * 100% = 66.666...%, which rounds up to 67%

<result>67</result>