The disinfectant alcohol in the hospital is made of pure alcohol and distilled water at a ratio of 3:1. Now there are 600 grams of pure alcohol, how many grams of distilled water need to be added?
医院的消毒酒精是由纯酒精和蒸馏水按3：1的比例配制而成的，现在有600克纯酒精，需要加入多少克蒸馏水？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">600 * (1/3)</gadget>
<output>200</output>

<result>200</result>