To solve this expression, we need to find a common denominator for all the fractions involved. The least common denominator (LCD) for 5/27, 27/23, 5/27, and 16/23 is 621.

Rewriting the expression with the common denominator:
(5/27) + (27/23) + (0.5) - (5/27) + (16/23)

Now, we can add the fractions with the same denominator:
[(5 + 27 + 0.5 - 5) / 27] + [(27 + 16) / 23]
= (27.5 / 27) + (43 / 23)

To add these fractions, we need to find a common denominator, which is 621:
[(27.5 * 23) / (27 * 23)] + [(43 * 27) / (23 * 27)]
= (632.5 / 621) + (1161 / 621)

Now, we can add the fractions:
(632.5 + 1161) / 621
= 1793.5 / 621

This fraction cannot be simplified further, so the final answer is approximately:
1793.5 / 621 ≈ 2.89