A cage can hold 18 rabbits of the same size and 9 chickens of the same size, or 14 rabbits of the same size and 15 chickens of the same size. If it is specially used as a rabbit cage, how many rabbits can it hold at most?
一个笼子能容纳18只同样大的兔子和9只同样大的鸡，或者容纳14只同样大的兔子和15只同样大的鸡，如果专门用来做兔笼，最多可以容纳多少只兔．
<gadget id="calculator">18 - 14</gadget>
<output>4</output>

<gadget id="calculator">15 - 9</gadget>
<output>6</output>

<gadget id="calculator">4 / 6</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">15 * (2/3)</gadget>
<output>10</output>

<gadget id="calculator">10 + 14</gadget>
<output>24</output>

<result>24</result>