the Banking project has the following code files:
- BankAccount.cs
- Program.cs

Task 1.1:
- Create a new public class named `BankAccount` in a namespace called `Banking`
- Create two properties named `AccountNumber` and `Balance`. The `AccountNumber` property must store strings in the format of "123-456". The `Balance` property must be of type decimal.

Task 1.2:
In `Program.cs` file, you need to configure the following:
- Create an instance of the `BankAccount` class and populate the class with a sample account number and balance. For example, `AccountNumber` with the value "123-456" and Balance with the value `$1000.23$`
- Assign the instance to a variable named `account`


Note: Only modify the code referenced between the comments and leave all comment lines intact.

The code must compile with the existing code in `Program.cs` to display an output as shown in the following example:

`Account 123-456 Balance: $1,000.23`