What is the difference of 24 minus the product of 4 and 2?
24减去4与2的积，它的差是4的多少倍．
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">24 - 8</gadget>
<output>16</output>

<gadget id="calculator">16 / 4</gadget>
<output>4</output>

<result>4</result>