Chickens and rabbits are in the same cage, with 10 heads and 24 legs, then the number of rabbits is equal to that of chickens ((())/(())).
鸡兔同笼，有10个头，24条腿，那么兔的只数是鸡的((())/(()))．
<gadget id="calculator">10 * 4</gadget>
<output>40</output>

<gadget id="calculator">40 - 24</gadget>
<output>16</output>

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

<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<gadget id="calculator">10 - 8</gadget>
<output>2</output>

<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>