We look at the division of 136716 by 18 
The aim is to understand the frequency of 18 in 136716.

On to step 1:
1 divided by 18 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 18

On to step 2:
18 goes into 13 0 times with a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 13, we get 13.
Fetch the next digit (6) from the dividend, attach it to 13 and continue: 136 / 18

Advancing to step 3:
136 divided by 18 is 7 with a remainder of 10.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 126 from 136 to get 10.
Fetch the next digit (7) from the dividend, attach it to 10 and continue: 107 / 18

Advancing to step 4:
The number 18 fits into 107 5 times, leaving a remainder of 17.
The next digit of our result is 5. 
Result so far: 75.0
If we subtract 90 from 107, we get 17.
Fetch the next digit (1) from the dividend, attach it to 17 and continue: 171 / 18

Moving on to step 5:
18 can be fit into 171 9 times, resulting in a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 759.0
Subtracting 162 from 171 leaves us with 9.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 18

Step 6:
The number 18 fits into 96 5 times, leaving a remainder of 6.
The next digit of our result is 5. 
Result so far: 7595.0
Deduct 90 from 96 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.

Step 7:
If we divide 60 by 18, we get 3 and a remainder of 6.
The next digit of our result is 3. 
Result so far: 7595.3
The remainder is 6 after subtracting 54 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
When dividing 60 by 18, we get 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 7595.33
Subtracting 54 from 60 leaves us 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.

In conclusion, the division gives 7595.33 with a balance of 0.006.