In agricultural production, seeds are soaked in 1 kg of salt water containing 0.002 kg of salt. How many grams of salt are needed to prepare 1 ton of such salt water?
农业生产中，要用1千克盐水中含盐0.002千克的盐水浸泡种子，配制这样的盐水1吨，需要盐多少克？
<gadget id="calculator">1_000 / 1</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 * 0.002 * 1_000</gadget>
<output>2_000</output>

<result>2_000</result>