The result of your conversion between dekatherm and wattsecond appears here
To convert between Dekatherm and Wattsecond you have to do the following:
First divide 1.055057e+09 / 1 = 1055057000.
Then multiply the amount of Dekatherm you want to convert to Wattsecond, use the chart below to guide you.
Symbol: dathm
No description
Symbol: Ws
No description