# \$1divide
<a name="divide"></a>

The `$divide` operator in the Amazon DocumentDB aggregation pipeline is used to divide one number by another. It is a useful operator for performing mathematical operations on numeric fields within your documents.

**Parameters**
+ `numerator`: The dividend or the number to be divided.
+ `denominator`: The divisor or the number to divide by.

## Example (MongoDB Shell)
<a name="divide-examples"></a>

This example demonstrates how to use the `$divide` operator to calculate the hourly rate for employees based on their yearly salary and the number of working hours per year.

**Create sample documents**

```
db.employees.insertMany([
  { _id: 1, name: "John Doe", salary: 80000, hoursPerYear: 2080 },
  { _id: 2, name: "Jane Smith", salary: 90000, hoursPerYear: 2080 },
  { _id: 3, name: "Bob Johnson", salary: 75000, hoursPerYear: 2080 }
]);
```

**Query example**

```
db.employees.aggregate([
  {
    $project: {
      name: 1,
      hourlyRate: { $divide: ["$salary", "$hoursPerYear"] }
    }
  }
])
```

**Output**

```
[
  { "_id" : 1, "name" : "John Doe", "hourlyRate" : 38.46153846153846 },
  { "_id" : 2, "name" : "Jane Smith", "hourlyRate" : 43.26923076923077 },
  { "_id" : 3, "name" : "Bob Johnson", "hourlyRate" : 36.05769230769231 }
]
```

## Code examples
<a name="divide-code"></a>

To view a code example for using the `$divide` command, choose the tab for the language that you want to use:

------
#### [ Node.js ]

```
const { MongoClient } = require('mongodb');

async function calculateHourlyRate() {
  const client = await MongoClient.connect('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false');
  const db = client.db('test');
  const employees = db.collection('employees');

  const result = await employees.aggregate([
    {
      $project: {
        name: 1,
        hourlyRate: { $divide: ["$salary", "$hoursPerYear"] }
      }
    }
  ]).toArray();

  console.log(result);
  client.close();
}

calculateHourlyRate();
```

------
#### [ Python ]

```
from pymongo import MongoClient

def calculate_hourly_rate():
    client = MongoClient('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false')
    db = client.mydatabase
    employees = db.employees

    result = list(employees.aggregate([
        {
            '$project': {
                'name': 1,
                'hourlyRate': { '$divide': ['$salary', '$hoursPerYear'] }
            }
        }
    ]))

    print(result)
    client.close()

calculate_hourly_rate()
```

------