The mass of each cow is about 500 kg, and the mass of how many cows is about 1 ton.
每头牛的质量约是500千克，多少头牛的质量约是1吨．
<gadget id="calculator">1_000 / 500</gadget>
<output>2</output>

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

<result>2</result>