Chickens and rabbits are in the same cage, with 8 heads and 26 feet, how many rabbits are there?
鸡兔同笼，有8个头，26只脚，兔有多少只．
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">32 - 26</gadget>
<output>6</output>

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

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<result>5</result>