Add Method

hi, i need help with this method please. if anyone can help, i will
apreciated. A method called getUnsignedValue. This method should
calculate and return the decimal number equivalent to the binary number
stored in the object. This method should simply return the integer
equivalent of the Binary number object. The calculation is performed
assuming that the binary number object is in standard binary notation,
and therefore does not have negative values. Note: this method should
NOT change the data stored inside the object!

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