Theory:

Regardless of the base value of the step with the lever\( 1\) assumes a number equal to the given base: a1=a.
Example:
581=58
 
141=14
 
11=111=101=0
Important!
On the degree of the figure with the lever \(0\) accept the number \(1\): a0=1.
The exception is degree 00 that doesn't make any sense.
 
30=1
 
7.50=1
 
8160=1
 
10=110=1
Important!
Numbers \(1,\) stepping up to any degree is \(1.\)
1n=1,nanynumber.11=133=1199=11000=1
 
Reference:
Mathematics Handbook for Students / J. Mencis, A. Sika - Riga: The Star, 1990. pp. 96-98.