to go from bitstrings to numbers and sprintf
to go from a number to a bitstring. As for the math, the usual operators work once you've done the conversion.
my $bitstring1 = shift @ARGV || '10010010111';
my $bitstring2 = shift @ARGV || '01101011010';
my $number1 = oct "0b$bitstring1";
my $number2 = oct "0b$bitstring2";
printf "%s + %s = %b\n", $bitstring1, $bitstring2, $number1 + $number2
As BrowserUK mentioned, this will only get you as far as your platform's integer types allow. Fortunately, Math::BigInt also accepts the '0b' prefix for input and has the as_bin method for output, and has replacements for oodles of math operations.
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