820557 ÷ 18 
The aim is to understand the frequency of 18 in 820557.

Moving on to step 1:
18 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (2) from the dividend and append it to 8, then repeat: 82 / 18

Advancing to step 2:
82 divided by 18 is 4 with a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 72 from 82 leaves us with 10.
Fetch the next digit (0) from the dividend, attach it to 10 and continue: 100 / 18

Going ahead to step 3:
When dividing 100 by 18, we get 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 45.0
Subtract 90 from 100 to get 10.
Grab the next digit (5) from the dividend, add it to 10, then carry on: 105 / 18

Let's proceed to step 4:
When dividing 105 by 18, we get 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 455.0
Subtracting 90 from 105 leaves us with 15.
Bring next digit (5) of the dividend behind the 15 and repeat the process: 155 / 18

Step 5:
18 goes into 155 8 times with a remainder of 11.
Put 8 as the next digit of the answer. 
Result so far: 4558.0
If we take 144 away from 155, we end up with 11.
Append the next digit (7) from the dividend to 11 and continue with: 117 / 18

Step 6:
If we divide 117 by 18, we get 6 and a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 45586.0
If we subtract 108 from 117, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 7:
The number 18 fits into 90 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 45586.5
If we take 90 away from 90, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
If we divide 0 by 18, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 45586.5
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
When dividing 0 by 18, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 45586.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 45586.5 with a remaining 0.0.