def parseEquation(self, inp):
        """Solves the equation specified by the input string.

        Args:
            inp (str): An equation, specified in words, containing some
                combination of numbers, binary, and unary operations.

        Returns:
            The floating-point result of carrying out the computation.
        """
        inp = MathService._preprocess(inp)
        split = inp.split(' ')

        # Recursive call on unary operators
        for i, w in enumerate(split):
            if w in self.__unaryOperators__:
                op = self.__unaryOperators__[w]

                # Split equation into halves
                eq1 = ' '.join(split[:i])
                eq2 = ' '.join(split[i + 1:])

                # Calculate second half
                result = MathService._applyUnary(self.parseEquation(eq2), op)

                return self.parseEquation(eq1 + " " + str(result))

        def extractNumbersAndSymbols(inp):
            numbers = []
            symbols = []

            # Divide into values (numbers), operators (symbols)
            next_number = ""
            for w in inp.split(' '):
                if w in self.__binaryOperators__:
                    symbols.append(self.__binaryOperators__[w])

                    if next_number:
                        numbers.append(next_number)
                        next_number = ""

                else:
                    if next_number:
                        next_number += " "
                    next_number += w

            if next_number:
                numbers.append(next_number)

            # Cast numbers from words to integers
            def convert(n):
                if n in self.__constants__:
                    return self.__constants__[n]

                converter = NumberService()
                return converter.parse(n)

            numbers = [convert(n) for n in numbers]

            return numbers, symbols

        numbers, symbols = extractNumbersAndSymbols(inp)

        return MathService._calculate(numbers, symbols)