A kind of potion is prepared by mixing medicine powder and water according to the mass ratio of 3:400. To prepare 6045 kg of this potion, how much water is needed?
一种药水是用药粉和水按质量比3：400配制而成的，要配制这种药水6045千克，需要用水多少千克？
<gadget id="calculator">400 + 3</gadget>
<output>403</output>

<gadget id="calculator">400 / 403</gadget>
<output>400/403 = around 0.992556</output>

<gadget id="calculator">6_045 * (400/403)</gadget>
<output>6_000</output>

<result>6_000</result>