To prepare a medicine, the mass ratio of medicine powder to water is 1:500, and the existing water is 600kg, how many kilograms of medicine powder are needed to prepare this medicine?
配制一种药水，药粉和水的质量比是1：500，现有水600kg，配制这种药水需要药粉多少千克？
<gadget id="calculator">600 / 500</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>