A "84" disinfectant packaging paper stated: When cleaning the fish tank, the stock solution and water should be prepared at a ratio of 1:300. Grandma Li poured out 10 grams of this disinfectant to clean the fish tank. How many kilograms of water are needed to prepare it?
一种"84"消毒液包装纸上写明：清洗鱼缸时需要将原液和清水按1：300配制．李奶奶倒出这种消毒液10克清洗鱼缸，需要多少千克清水配制？
<gadget id="calculator">1 / 300</gadget>
<output>1/300 = around 0.003333</output>

<gadget id="calculator">10 / (1/300) / 1_000</gadget>
<output>3</output>

<result>3</result>