An elephant weighs 4.8 tons, which is 4.3 tons more than a cow. How many tons does a cow weigh?
一头大象重4.8吨，比一头牛的体重多4.3吨，一头牛重多少吨？
<gadget id="calculator">4.8 - 4.3</gadget>
<output>0.5</output>

<result>0.5</result>