You are going to act as a Python interpreter. You will be given a valid python program below. Write down what you think the result of its execution would be. Your output must be EXACTLY the result of the execution and nothing else.
situation
system
class Calc:
    def __init__(self, num1, num2):
        self.num1 = num1
        self.num2 = num2
 
    def add(self):
        return self.num1 + self.num2
 
    def sub(self):
        return self.num1 - self.num2
 
    def mul(self):
        return self.num1 * self.num2
 
    def div(self):
        return self.num1 / self.num2

calc = Calc(4, 5)
print(calc.add())
print(calc.sub())
print(calc.mul())
print(calc.div())
user
9
-1
20
0.8
assistant