∑ i = 1 len ( address ) Asc ( Mid ( address , i , 1 ) ) − Asc ( "A" ) + 1 × 26 len ( address ) − i %% sum from {i=1} to {func len(address)} left[ {left lbrace {func Asc({func Mid(address, i, 1)})-{func Asc("\"A\"")}+1} right rbrace times{26^{len(address)-i}}} right ]