We divide 808653 by 18
The aim is to understand the frequency of 18 in 808653.

Let's proceed to step 1:
18 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 18

Advancing to step 2:
When dividing 80 by 18, we get 4 with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 72 from 80 and we're left with 8.
Bring next digit (8) of the dividend behind the 8 and repeat the process: 88 / 18

Moving on to step 3:
The number 18 fits into 88 4 times, leaving a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 44.0
Deduct 72 from 88 and we're left with 16.
Grab the next digit (6) from the dividend, add it to 16, then carry on: 166 / 18

On to step 4:
If we divide 166 by 18, we get 9 and a remainder of 4.
Record the quotient 9 as the next digit in the result. 
Result so far: 449.0
If we take 162 away from 166, we end up with 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 18

Going ahead to step 5:
45 divided by 18 is 2 with a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 4492.0
The remainder is 9 after subtracting 36 from 45.
Include the next digit (3) from the dividend after 9, then repeat: 93 / 18

Step 6:
93 divided by 18 is 5 with a remainder of 3.
The next digit of our result is 5. 
Result so far: 44925.0
If we subtract 90 from 93, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
30 divided by 18 is 1 with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 44925.1
Subtracting 18 from 30 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 8:
The number 18 fits into 120 6 times, leaving a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 44925.16
If we subtract 108 from 120, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 9:
When dividing 120 by 18, we get 6 with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 44925.166
If we subtract 108 from 120, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 44925.166, with a leftover of 0.0012.