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$ perl -le'sub f { print("@_"); } f (5) + 4'
5

$ perl -wle'sub f { print("@_"); } f (5) + 4'
Useless use of addition (+) in void context at -e line 1.
5

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

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