## Bug description

Monthly Active Users metric seems wrong when choosing "# Number" as chart type.

Number: 
![image](https://user-images.githubusercontent.com/513669/201980874-be7d9c0d-5c9c-4c1e-955c-ea4143c84061.png)

Line chart: 
![image](https://user-images.githubusercontent.com/513669/201980986-b17af929-84e5-4f6a-b7f8-23b7ac8bedbc.png)

**490 != 70**

## How to reproduce

1. Create a new insight using any event and the "Monthly active users" metric
2. Date range = This month + Grouped by = Day
3. Choose chart type as Number => remember value
4. Change chart type as Linear => check last data point

=> the 2 values do not match
=> in other words there's a diff between a total aggregation and an aggregation per bucket of time ?

## Environment

- [x] PostHog Cloud
posthog/queries/test/test_trends.py
self._create_event_count_per_user_events()
        daily_response = Trends().run(
            Filter(
                data={
                    "display": TRENDS_TABLE,
                    "events": [{"id": "viewed video", "math": "avg_count_per_actor"}],
                    "date_from": "2020-01-01",
                    "date_to": "2020-01-07",
                }
            ),
            self.team,
        )
        assert len(daily_response) == 1
        assert daily_response[0]["aggregated_value"] == 2.6666666666666665  # 8 
    def test_trends__per_user_maximum(self):