The result of your conversion between pound/cubic foot and pound/cubic mile appears here
To convert between Pound/cubic Foot and Pound/cubic Mile you have to do the following:
First divide 0.45359237/((0.0037854118/231)*1728) / 0.45359237/(((0.0037854118/231)*1728*27)*5451776000) = 147197952000.
Then multiply the amount of Pound/cubic Foot you want to convert to Pound/cubic Mile, use the chart below to guide you.
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