checksum 2 of 5 interleaved(number a)
| 
     Group  | 
                
Returns the 2 of 5 interleaved checksum for a.
Description of Parameters
| 
     Parameter  | 
                
     Description  | 
        
| 
     a  | 
                
     Number to create checksum for.  | 
        
Examples
| 
     Parameter a  | 
                
     Result  | 
        
| 
     12345  | 
                
     7  | 
        
| 
     01234  | 
                
     8  |