A lightweight brick weighs about 20 kilograms, and how many such lightweight bricks weigh about 1 ton.
一块轻质砖大约重20千克，多少块这样的轻质砖大约重1吨．
<gadget id="calculator">1_000 / 20</gadget>
<output>50</output>

<gadget id="calculator">1 * 50</gadget>
<output>50</output>

<result>50</result>