in reply to Converting "IV" from base 26

Try: 

print +(v('I')+1)*26 + v('V'), "\n";

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Enable warnings and you'll get: 

[0] Perl> print (v('I')+1)*26 + v('V'), "\n";;
print (...) interpreted as function at (eval 3) line 1, <STDIN> line 1
+.

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