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

The expression is:
\[ (-511) \cdot 715 \cdot (11 - 5) \cdot (-30) \]

1. **Simplify inside the parentheses:**
\[ 11 - 5 = 6 \]

2. **Substitute back into the expression:**
\[ (-511) \cdot 715 \cdot 6 \cdot (-30) \]

3. **Multiply the constants:**
- First, multiply the negative numbers:
\[ (-511) \cdot (-30) = 15330 \]
- Next, multiply the positive numbers:
\[ 715 \cdot 6 = 4290 \]

4. **Combine the results:**
\[ 15330 \cdot 4290 \]

5. **Perform the final multiplication:**
\[ 15330 \cdot 4290 = 65771700 \]

So, the simplified value of the expression is:
\[ 65771700 \]