A cow weighs 0.34 tons, an elephant weighs 15 times that of a cow: how many tons does the elephant weigh more than the cow?
一头牛体重0.34吨，一只大象的体重是一头牛的15倍：这只大象比这头牛重多少吨？
<gadget id="calculator">15 - 1</gadget>
<output>14</output>

<gadget id="calculator">0.34 * 14</gadget>
<output>4.76</output>

<result>4.76</result>