Can you give a micro-example of a task — a specific scenario?

Example micro-task: write a function that takes a list of numbers and returns a new list where each number is squared, but only if it is even.

This is a simple scenario that can be used for practicing data filtering and transformation.

Example in Python:

def square_even_numbers(numbers):
    return [x**2 for x in numbers if x % 2 == 0]

# Example usage
print(square_even_numbers([1, 2, 3, 4, 5]))  # Outputs [4, 16]