Hello everybody, please have a look at the following:
In[1]:= Subscript[\[Sigma], Subscript[K, Euler]] = 10
Out[1]= 10
In[2]:= \[Sigma] = 5
Out[2]= 5
In[3]:= Subscript[\[Sigma], Subscript[K, Euler]]/\[Sigma]
Out[3]= Subscript[5, Subscript[K, Euler]]/5
As a photo too, because i think it is better visible then:

Does sombody have an idea on how to stop this problem and why it occurs. For me it is kind of mandatory to use those index.
Greetings Christoph