A cow weighs about 200 kilograms, and how many tons does 5 such cows weigh?
一头牛约重200千克，5头这样的牛约重多少吨．
<gadget id="calculator">200 * 5</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 / 1_000</gadget>
<output>1</output>

<result>1</result>