1. The problem is to evaluate the expression $8 \sqrt{6}$. 2. Recall that $\sqrt{a}$ means the square root of $a$, which is a number that when squared gives $a$. 3. Calculate $\sqrt{6} \approx 2.449$. 4. Multiply $8 \times 2.449 = 19.592$. 5. Therefore, $8 \sqrt{6} \approx 19.592$.