To solve the expression \( 15 \cdot 8^0 / 5 + 4(7^0 - 6) \), we need to simplify it step by step:
- First, we can evaluate the powers of 0:
- \( 8^0 = 1 \)
- \( 7^0 = 1 \)
So, substituting these values into the expression gives us:
\[ 15 \cdot 1 / 5 + 4(1 - 6) \]
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Now, simplify the expression:
- The first part: \( 15 \cdot 1 / 5 = 15 / 5 = 3 \)
- The second part: \( 1 - 6 = -5 \) and then \( 4 \cdot (-5) = -20 \)
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Now, we can combine the two results: \[ 3 + (-20) = 3 - 20 = -17 \]
Therefore, the final result is:
\[ \boxed{-17} \]