Only until more information is available
'erg' is Dutch for 'severe', 'bad', 'really', 'very' etc. The meaning and translation depends on the sentence you'll use it for.
look at Guide 111 in the orange section of the ERG.
111
wats ERG?
An erg is a unit of energy equivalent to 10-7 Joules. It is also a dyne centimeter, which is probably the most common expression of an erg. And 6.2415 ×1011 eV (electron volts) is also an erg. A link is provided to the Wikipedia article on the erg.
erg theory of motivation
457 plus 111 is 568. Use a calculator, is is easier.
111
A. Look in the Guide 111 in the orange section of the ERG
1 erg = 1/10^7 Joules
The ERG guide number for nitrogen is 121.