class MovingAverage:

    def __init__(self, size: int):
        self.size = size
        self.q = deque()
        self.count = 0
        self.sum = 0

    def next(self, val: int) -> float:
        self.count += 1

        if self.count <= self.size:
            self.sum += val
            self.q.append(val)
            return self.sum/self.count
        else:
            front = self.q.popleft()
            self.sum = self.sum - front + val
            return self.sum/self.size