Now how many chickens and rabbits are in the same cage, there are 35 heads from the inside of the cage, and 94 feet from the bottom of the cage, how many chickens are there?
现在有若干鸡和兔在同一笼子里，从笼子里看有35个头，从笼子下数有94只足，那么有鸡多少只？
<gadget id="calculator">35 * 2</gadget>
<output>70</output>

<gadget id="calculator">94 - 70</gadget>
<output>24</output>

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

<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<gadget id="calculator">35 - 12</gadget>
<output>23</output>

<result>23</result>