Error query native mongodb

Hello, I have the following problem in setting up a query for MongoDB. The query was made as follows:

[
    {
        "$match": {
            "$and": [
                {
                    "$or": [{{created_at}}]
                },
                {
                    "current.ca5d147cbf24b1b5340cd02597f8931f4752cbff": {
                        "$eq": null
                    },
                    "current.a0100942feec7297fa71f45444030a1cbc5652d7": {
                        "$not": {
                            "$regex": "outbound"
                        }
                    },
                    "stages.SAL": {
                        "$exists": true
                    },
                    "$nor": [
                        {
                            "current.status": "deleted"
                        },
                        {
                            "current.lost_reason": "[PV] - Lead duplicado"
                        }
                    ]
                }
            ]
        }
    },
    {
        "$project": {
            "_id": "$_id",
            "__deal": "$deal_id",
            "__dias": {
                "$divide": [{
                    "$subtract": ["$stages.SAL", "$stages.MQL"]
                }, 1000 * 60 * 60 * 24]
            },
            "__horas": {
                "$divide": [{
                    "$subtract": ["$stages.SAL", "$stages.MQL"]
                }, 3600000]
            }
        }
    },
    {
        "$project": {
            "_id": 0,
            "__deal": 1,
            "Dias": {
                "$round": ["$__dias", 1]
            },
            "Horas": {
                "$round": ["$__horas", 1]
            }
        }
    },
    {
        "$sort": {
            "Dias": - 1
        }
    }
]

But the following error is displayed:

Invalid JSON input. Position: 1255. Character: ‘*’.

I know it’s because of this here in the query:

"$divide": [{
     "$subtract": ["$stages.SAL", "$stages.MQL"]
}, 1000 * 60 * 60 * 24]

How to resolve for json to accept the character * ??

Hi @saulolago
You’ll find better help on stackoverflow.com or a dedicated forum to MongoDB, since it is not specific to Metabase.
1000 * 60 * 60 * 24 => {"$multiply":[1000, 60, 60, 24]}