We're dividing 652515 by 18 
The aim is to understand the frequency of 18 in 652515.

On to step 1:
The number 18 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 18

Moving on to step 2:
If we divide 65 by 18, we get 3 and a remainder of 11.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 54 from 65 and we're left with 11.
Take the next digit (2) from the dividend and append it to 11, then repeat: 112 / 18

Moving on to step 3:
18 can be fit into 112 6 times, resulting in a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 36.0
The remainder is 4 after subtracting 108 from 112.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 18

Step 4:
When dividing 45 by 18, we get 2 with a remainder of 9.
The next digit of our result is 2. 
Result so far: 362.0
Deduct 36 from 45 and we're left with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 18

Going ahead to step 5:
18 can be fit into 91 5 times, resulting in a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 3625.0
The remainder is 1 after subtracting 90 from 91.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 18

Moving on to step 6:
18 goes into 15 0 times with a remainder of 15.
The next digit of our result is 0. 
Result so far: 36250.0
If we subtract 0 from 15, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 7:
If we divide 150 by 18, we get 8 and a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 36250.8
The remainder is 6 after subtracting 144 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 8:
60 divided by 18 is 3 with a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 36250.83
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.

Going ahead to step 9:
60 divided by 18 is 3 with a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 36250.833
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.

The final result is 36250.833 with a remainder of 0.0006.