## 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
"math_group_type_index": None,
                        "properties": [],
                    },
                    "label": "event_name",
                    "count": 3.0,
                    "data": [2.0, 0.0, 0.0, 0.0, 1.0, 0.0],
                    "labels": ["5-Jan-2020", "6-Jan-2020", "7-Jan-2020", "8-Jan-2020", "9-Jan-2020", "10-Jan-2020"],
                    "days": ["2020-01-05", "2020-01-06", "2020-01-07", "2020-01-08", "2020-01-09", "2020-01-10"],
                }
            ],
        )
    @test_with_materialized_columns(["$some_property"])
    def test_property_filtering(self):
        self._create_events()
        with freeze_time("2020-01-04"):
            response = Trends().run(
                Filter(
                    data={
                        "properties": [{"key": "$some_property", "value": "value"}],
                        "events": [{"id": "sign up"}],
                    }
                ),
                self.team,
            )
        self.assertEqual(response[0]["labels"][4], "1-Jan-2020")
        self.assertEqual(response[0]["data"][4], 1.0)
        self.assertEqual(response[0]["labels"][5], "2-Jan-2020")
        self.assertEqual(response[0]["data"][5], 0)
    @snapshot_clickhouse_queries
    def test_trends_with_session_property_total__math(self):