A kind of potion is made up of medicinal powder and water at a ratio of 1:50. To prepare 204 kg of this potion, how much water is needed?
一种药水是用药粉和水按1：50的比例配成的，要配置这种药水204千克，需要水多少千克？
<gadget id="calculator">50 + 1</gadget>
<output>51</output>

<gadget id="calculator">50 / 51</gadget>
<output>50/51 = around 0.980392</output>

<gadget id="calculator">204 * (50/51)</gadget>
<output>200</output>

<result>200</result>