class CalMultiply():
    def multiply(self):
        return self.v1*self.v2
class CalDivide():
    def divide(self):
        return self.v1/self.v2
class Cal(CalMultiply, CalDivide):
    def __init__(self, v1, v2):
        if isinstance(v1, int):
            self.v1 = v1
        if isinstance(v2, int):
            self.v2 = v2
    def add(self):
        return self.v1+self.v2
    def subtract(self):
        return self.v1-self.v2
    def setV1(self, v):
        if isinstance(v, int):
            self.v1 = v
    def getV1(self):
        return self.v1
c = Cal(100, 10)
print(c.add())
print(c.multiply())
print(c.divide())