8. (10 points) On the right is an equation, where 9 Chinese characters represent the numbers 1 to 9, and different characters represent different numbers. The maximum possible value of the equation is $\qquad$.

Hope $\times$ Longing + Tree $\times$ Green + Sky $\times$ Blue
【Analysis】Observing this expression, to maximize the value of this expression, the product of the two two-digit numbers must be as large as possible, so Sky $=96$, then Azure $=87$; Similarly, the product of a two-digit number and a one-digit number must also be as large as possible, so

Emerald $=43$, then Tree $=5$; then Hope $=1$, Look $=2$; according to this, the solution is as follows.
【Solution】According to the analysis, we get,
$$
\begin{array}{l}
1 \times 2+43 \times 5+96 \times 87 \\
=2+215+8352 \\
=8569 ;
\end{array}
$$

Therefore, the answer is: 8569.