We divide 518455 by 9
The aim is to understand the frequency of 9 in 518455.

Step 1:
9 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 9

Step 2:
The number 9 fits into 51 5 times, leaving a remainder of 6.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtracting 45 from 51 leaves us with 6.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 9

On to step 3:
9 goes into 68 7 times with a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 57.0
Deduct 63 from 68 and we're left with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 9

Going ahead to step 4:
54 divided by 9 is 6 with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 576.0
Subtract 54 from 54 to get 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 9

Going ahead to step 5:
5 divided by 9 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 5760.0
If we subtract 0 from 5, we get 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 9

Going ahead to step 6:
If we divide 55 by 9, we get 6 and a remainder of 1.
Put 6 as the next digit of the answer. 
Result so far: 57606.0
The remainder is 1 after subtracting 54 from 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
10 divided by 9 is 1 with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 57606.1
If we subtract 9 from 10, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 8:
9 can be fit into 10 1 times, resulting in a remainder of 1.
The next digit of our result is 1. 
Result so far: 57606.11
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The quotient of the division is 57606.11, and the remainder is 0.001.