9. The equation below is composed of 1 9 nine digits, with "7" already filled in. Please fill in the rest of the numbers into " $\square$ " to make the equation true.
$\square$ $\square$
$\square$ $\div$ $\square$ $=$ $\square$ $-$ $\square$ $=$ $\square$ $-$ $\square$
$\square$ 7.
【Analysis】 $128 \div 64=5-3=9-7,164 \div 82=5-3=9-7$  
From the division on the far left, we know the result must be positive, so the number before 7 must be greater than 7, which can only be 8 or 9.  
If it is 8, the calculation result would be 1, but from the division on the far left, we know the result cannot be 1.  
Therefore, the number before 7 should be 9, and the operation result is 2.  
The remaining numbers are $1, 2, 3, 4, 5, 6, 8$  
Considering the division on the far left, the divisor can be at most 86. Given the operation result is 2, the dividend can be at most 172, which means the hundreds digit of the dividend must be 1.  

Given the dividend is at least 123, the divisor must be at least 62.  
By trying the divisors $62, 63, 64, 65, 68, 82, 83, 84, 85, 86$, we find that only the above two solutions are valid.