# Make sure no code wich is not a math expression ends up in eval().
return 0 unless $amount =~ /^ [\s \d \( \) \- \+ \* \/ \. ]* $/x;
+
+ # Prevent numbers from being parsed as octals;
+ $amount =~ s{ (?<! [\d.] ) 0+ (?= [1-9] ) }{}gx;
+
return scalar(eval($amount)) * 1 ;
}