1 liter of water is about 1 kg, how many grams is 200 ml of water?
1升水大约是1千克，200毫升水是多少克．
<gadget id="calculator">1 * 1_000</gadget>
<output>1_000</output>

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

<gadget id="calculator">1 * 200</gadget>
<output>200</output>

<result>200</result>