The result of your conversion between pound/cubic yard and milligram/litre appears here
To convert between Pound/cubic Yard and Milligram/litre you have to do the following:
First divide 0.45359237/((0.0037854118/231)*1728*27) / 0.000001/0.001 = 593.27641875
Then multiply the amount of Pound/cubic Yard you want to convert to Milligram/litre, use the chart below to guide you.
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