def calculate_fibonacci(n):
    """
    Calculate the nth number in the Fibonacci sequence.
    
    Args:
        n (int): The position in the sequence (starting from 0)
        
    Returns:
        int: The Fibonacci number at position n
    """
    if n <= 0:
        return 0
    elif n == 1:
        return 1
    else:
        a, b = 0, 1
        for _ in range(2, n + 1):
            a, b = b, a + b
        return b

# Example usage
if __name__ == "__main__":
    for i in range(10):
        print(f"Fibonacci({i}) = {calculate_fibonacci(i)}")