perl -we "$x="LanX"; print ($x * 3);"
Argument "LanX" isn't numeric in multiplication (*) at -e line 1.
0
perl -we "$x="LanX"; print ($x % 3);"
Argument "LanX" isn't numeric in modulus (%) at -e line 1.
0
perl -we "$x="LanX"; print (3^$x);"
Argument "LanX" isn't numeric in bitwise xor (^) at -e line 1.
3
perl -we "$x="LanX"; print (3**$x);"
Argument "LanX" isn't numeric in exponentiation (**) at -e line 1.
1