8186
【Analysis】Observing this expression, to maximize its value, the product of the three-digit number and the one-digit number must be as large as possible. Therefore, Spring $=8$, Charm $=9$. According to the principle of place value, Light is in the tens place, and Light $\times 9$ should be as large as possible, so Light $=7$. The remaining numbers are $5$ and $6$, so Red $=6$, Flower $=5$. The remaining numbers are $1$, $2$, $3$, and $4$. To maximize the product, Bright $=4$, Child $=3$, Grass $=2$, and Green $=1$. Based on this, we solve the problem.

【Solution】Solution: According to the above analysis:
$$
\begin{array}{l}
2 \times 1+53 \times 6+874 \times 9, \\
=2+318+7866, \\
=8186 .
\end{array}
$$

The answer is: 8186.
8. (10 points) Below is an equation, where 9 Chinese characters represent the numbers 1 to 9, and different characters represent different numbers. Then the maximum possible value of the equation is
grass $\times$ green + flower $\times$ red + spring sunshine $\times$ bright.