import math as mh
class Real:
    def __init__(self, num, den):
        self.num = num
        self.den = den
    def output(self):
        print (str(self.num) + "/" + str(self.den))
    def __add__(self, other):
        num = self.num * other.den + self.den * other.num
        den = self.den * other.den
        return Real(num, den)
    def __sub__(self, other):
        num = self.num * other.den - self.den * other.num
        den = self.den * other.den
        return Real(num, den)
    def __mul__(self, other):
        num = self.num * other.num
        den = self.den * other.den
        return Real(num, den)
    def __div__(self, other):
        num = self.num * other.den
        den = self.den * other.num
        return Real(num, den)
    def decimal(self):
        return self.num/self.den
    def simply(self):
        c = mh.gcd(self.num, self.den)
        return Real(self.num / c, self.den / c)

x = Real(2, 3)
y = Real(3, 4)
k = x * y
k.simply().output()