We look at the division of 899052 by 18 
The aim is to understand the frequency of 18 in 899052.

Step 1:
18 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 18

On to step 2:
18 can be fit into 89 4 times, resulting in a remainder of 17.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 72 from 89 to get 17.
Include the next digit (9) from the dividend after 17, then repeat: 179 / 18

Going ahead to step 3:
When dividing 179 by 18, we get 9 with a remainder of 17.
The next digit of our result is 9. 
Result so far: 49.0
If we subtract 162 from 179, we get 17.
Bring next digit (0) of the dividend behind the 17 and repeat the process: 170 / 18

Let's proceed to step 4:
The number 18 fits into 170 9 times, leaving a remainder of 8.
Use 9 as the next digit of our solution. 
Result so far: 499.0
If we take 162 away from 170, we end up with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 18

Step 5:
The number 18 fits into 85 4 times, leaving a remainder of 13.
Write down 4 as next digit of the result. 
Result so far: 4994.0
The remainder is 13 after subtracting 72 from 85.
Append the next digit (2) from the dividend to 13 and continue with: 132 / 18

Advancing to step 6:
If we divide 132 by 18, we get 7 and a remainder of 6.
Use 7 as the next digit of our solution. 
Result so far: 49947.0
The remainder is 6 after subtracting 126 from 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 7:
If we divide 60 by 18, we get 3 and a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 49947.3
If we take 54 away from 60, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 8:
The number 18 fits into 60 3 times, leaving a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 49947.33
Deduct 54 from 60 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

After the division, we end up with 49947.33 and a remainder of 0.006.