We look at the division of 820944 by 18 
The aim is to understand the frequency of 18 in 820944.

On to step 1:
18 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (2) from the dividend after 8, then repeat: 82 / 18

Advancing to step 2:
The number 18 fits into 82 4 times, leaving a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 72 from 82 to get 10.
Append the next digit (0) from the dividend to 10 and continue with: 100 / 18

Advancing to step 3:
The number 18 fits into 100 5 times, leaving a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 45.0
Subtract 90 from 100 to get 10.
Fetch the next digit (9) from the dividend, attach it to 10 and continue: 109 / 18

On to step 4:
If we divide 109 by 18, we get 6 and a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 456.0
If we take 108 away from 109, we end up with 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 18

Moving on to step 5:
When dividing 14 by 18, we get 0 with a remainder of 14.
Record the quotient 0 as the next digit in the result. 
Result so far: 4560.0
Subtracting 0 from 14 leaves us with 14.
Append the next digit (4) from the dividend to 14 and continue with: 144 / 18

Advancing to step 6:
18 goes into 144 8 times with a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 45608.0
Subtracting 144 from 144 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.

Moving on to step 7:
0 divided by 18 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 45608.0
Deduct 0 from 0 and we're left 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:
The number 18 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 45608.0
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 45608.0 with a remaining 0.0.