Challenge: Declaring & Using Constants

You're building a subscription management system for a new streaming service. The program calculates the total subscription cost based on:

• The number of devices a user has.
• A fixed monthly price.

Your task: Declare a constant called MONTHLY_PRICE and assign it the value 9.99. The constant should then be used to calculate the total subscription cost.

Note

In most programming languages, constants are typically written in all uppercase letters, with words separated by underscores (_). This naming convention helps differentiate constants from regular variables and makes them easier to recognize in code.