A cow weighs 500 kg, how many cows weigh 1 ton.
一头牛重500千克，多少头牛重1吨．
<gadget id="calculator">1_000 / 500</gadget>
<output>2</output>

<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<result>2</result>