2 bricks weigh 4 kg, how many bricks weigh 1 ton.
2块砖重4千克，多少块砖重1吨．
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">1_000 / 2</gadget>
<output>500</output>

<gadget id="calculator">1 * 500</gadget>
<output>500</output>

<result>500</result>