A bottle of "84" disinfectant stated: When cleaning the bathtub, the original solution and water need to be prepared at a ratio of 1:300. Aunt Li poured out 10 grams of the original solution to clean the bathtub. How many kilograms of water should be added? (Answer with proportional knowledge)
一瓶"84"消毒液写明：清洗浴缸时，需要将原液和清水按1：300配制，李阿姨倒出原液10克清洗浴缸，要加清水多少千克？(用比例知识解答)
<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>