We look at the division of 825316 by 18 
The aim is to understand the frequency of 18 in 825316.

Going ahead to step 1:
18 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (2) from the dividend after 8, then repeat: 82 / 18

Step 2:
When dividing 82 by 18, we get 4 with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 4.0
The remainder is 10 after subtracting 72 from 82.
Bring next digit (5) of the dividend behind the 10 and repeat the process: 105 / 18

Moving on to step 3:
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: 45.0
If we subtract 90 from 105, we get 15.
Bring next digit (3) of the dividend behind the 15 and repeat the process: 153 / 18

Moving on to step 4:
18 can be fit into 153 8 times, resulting in a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 458.0
Deduct 144 from 153 and we're left with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 18

Let's proceed to step 5:
91 divided by 18 is 5 with a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 4585.0
Subtracting 90 from 91 leaves us with 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 18

Step 6:
If we divide 16 by 18, we get 0 and a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 45850.0
The remainder is 16 after subtracting 0 from 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 7:
18 can be fit into 160 8 times, resulting in a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 45850.8
Subtracting 144 from 160 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 8:
The number 18 fits into 160 8 times, leaving a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 45850.88
Subtracting 144 from 160 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 45850.88, with a leftover of 0.016.