The weight of an elephant is 5.1 tons, which is 15 times that of a cattle. How many tons does the cattle weigh?
大象的体重是5.1吨，是黄牛体重的15倍．黄牛重多少吨．
<gadget id="calculator">5.1 / 15</gadget>
<output>0.34</output>

<result>0.34</result>