The result of your conversion between dekatherm and grain/cubic foot appears here
To convert between Dekatherm and Grain/cubic Foot you have to do the following:
First divide 1.055057e+09 / ((0.45359237/16)*(192/175)/480)/((0.0037854118/231)*1728) = 461055399559.86499023
Then multiply the amount of Dekatherm you want to convert to Grain/cubic Foot, use the chart below to guide you.
Symbol: dathm
No description
Symbol: gr/ft³
No description