StupidMath.py

class StupidMath():
    def __init__(self, number):
        self.number = number
    def __add__(self, other):
        return repr(self.number - other.number) + repr(self.number+other.number)
    def __repr__(self):
        return str(self.number)

print "{} + {} = {}".format(StupidMath(10), StupidMath(3), StupidMath(10) + StupidMath(3))