The mass ratio of medicine powder to water in a medicine is 1:50. How many kilograms of water is needed to prepare such a medicine with 2 kilograms of medicine powder?
一种药水中药粉和水的质量比是1：50，用2千克药粉配置这样的药水，需要用水多少千克？
<gadget id="calculator">1 / 50</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">2 / (1/50)</gadget>
<output>100</output>

<result>100</result>