operator overloading

[sathyarajsp09-blip]

I was learning operator overloading method of OOPS the idea to perform add, multi,substract and I dont clearly understand why we use Vector2D under add method while returning the values though AI gave me some clarification that it is a instance needed to print value for the output of
v3 = v1 + v2
print(v3)
print(v3.x)

class Vector2D:
def init(self, x, y):
self.x = x
self.y = y

def __add__(self, other):
    return Vector2D(self.x + other.x, self.y + other.y)

def __str__(self):
    return f"({self.x}, {self.y})"