There are 48 chickens and rabbits, and 100 feet are counted. How many chickens are there?
有鸡兔共48只，数脚共100只，问鸡有几只？
<gadget id="calculator">4 * 48</gadget>
<output>192</output>

<gadget id="calculator">192 - 100</gadget>
<output>92</output>

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

<gadget id="calculator">92 / 2</gadget>
<output>46</output>

<result>46</result>