The result of your conversion between yottajoule and dekatherm appears here
To convert between Yottajoule and Dekatherm you have to do the following:
First divide 1.0e+24 / 1.055057e+09 = 947816089557246.625
Then multiply the amount of Yottajoule you want to convert to Dekatherm, use the chart below to guide you.
Symbol: yJ
No description
Symbol: dathm
No description