A cow weighs 0.24 tons, and an elephant weighs 2.5 times that of a cow. How much heavier is this elephant than a cow?
一头牛重0.24吨，一头大象的体重是牛的2.5倍．这头大象比牛重多少？
<gadget id="calculator">0.24 * 2.5</gadget>
<output>0.6</output>

<gadget id="calculator">0.6 - 0.24</gadget>
<output>0.36</output>

<result>0.36</result>