bag of washing powder weighs 500 grams, how many kilograms does 2 bags of such washing powder weigh?
一袋洗衣粉重500克，2袋这样的洗衣粉重多少千克．
<gadget id="calculator">500 * 2</gadget>
<output>1_000</output>

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

<result>1</result>