To simplify the given expression, let's break it down step by step:

1. **Expression:** \(\frac{2}{9} - \frac{2}{9} : -\frac{5}{27} / \frac{2}{9} - \frac{2}{9} : -\frac{5}{27}\)

2. The expression can be confusing due to the symbols used. Let's clarify it by adding some parentheses to differentiate between subtraction, division (represented by ":") and fractions.

Assuming the intended expression with fractional operations is like this:

\[
\left(\frac{2}{9} - \frac{2}{9}\right) \div \left( -\frac{5}{27} \right)
\]

3. First, simplify the subtraction inside the parentheses:

\[
\frac{2}{9} - \frac{2}{9} = 0
\]

4. Now, substitute back into the expression:

\[
0 \div \left( -\frac{5}{27} \right)
\]

5. Dividing zero by any non-zero number is zero:

\[
0
\]

The entire expression simplifies to \(0\).