fractionClass

def gcd(n, d):
    while n != d:
        if n > d:
            n = n - d
        else:
            d = d - n
    return n

class Fraction:
    def __init__(self, n, d):
        self.numerator = int(n / gcd(abs(n), abs(d)))
        self.denomerator = int(d / gcd(abs(n), abs(d)))
        if self.denomerator < 0:
            self.denomerator = abs(self.denomerator)
            self.numerator = -1*self.numerator
        elif self.denomerator == 0:
            raise ZeroDivisionError

    def Add(self, other):
        return self.numerator*other.denomerator + self.denomerator*other.numerator, self.denomerator*other.denomerator
    def Sub(self, other):
        return self.numerator*other.denomerator - self.denomerator*other.numerator, self.denomerator*other.denomerator
    def Mul(self, other):
        return self.numerator*other.numerator, self.denomerator*other.denomerator
    def Div(self, other):
        return self.numerator*other.denomerator, self.denomerator*other.numerator

def main():
    fA = Fraction(3,7)  #from the given input
    fB = Fraction(3,8)  #from the given input
    f3 = Fraction.Add(fA,fB)
    f4 = Fraction.Sub(fA,fB)
    f5 = Fraction.Mul(fA,fB)
    f6 = Fraction.Div(fA,fB)
    f8 = 0

    print (f3)
    print (f4)
    print (f5)
    print (f6)
    
if __name__ == '__main__':
    main()