There are 12 chickens and rabbits, and there are 36 chickens and rabbits. How many chickens and rabbits are there?
鸡和兔一共有12只，数一数脚有36只，其中鸡和兔各有多少只？
<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<gadget id="calculator">36 - 24</gadget>
<output>12</output>

<gadget id="calculator">4 - 2</gadget>
<output>2</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">12 - 6</gadget>
<output>6</output>

<result>6</result>