The result of your conversion between milligram/cubic kilometer and ounce/gallon [US] appears here
To convert between Milligram/cubic Kilometer and Ounce/gallon [US] you have to do the following:
First divide 0.000001/1.0E+9 / (0.45359237/16)/0.0037854118 = 0.
Then multiply the amount of Milligram/cubic Kilometer you want to convert to Ounce/gallon [US], use the chart below to guide you.
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