We're dividing 597522 by 18 
The aim is to understand the frequency of 18 in 597522.

On to step 1:
5 divided by 18 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 18

Going ahead to step 2:
18 goes into 59 3 times with a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 54 from 59, we get 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 18

On to step 3:
18 goes into 57 3 times with a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 33.0
Deduct 54 from 57 and we're left with 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 18

Let's proceed to step 4:
The number 18 fits into 35 1 times, leaving a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 331.0
If we subtract 18 from 35, we get 17.
Fetch the next digit (2) from the dividend, attach it to 17 and continue: 172 / 18

Advancing to step 5:
The number 18 fits into 172 9 times, leaving a remainder of 10.
The next digit of our result is 9. 
Result so far: 3319.0
The remainder is 10 after subtracting 162 from 172.
Append the next digit (2) from the dividend to 10 and continue with: 102 / 18

Going ahead to step 6:
When dividing 102 by 18, we get 5 with a remainder of 12.
Put 5 as the next digit of the answer. 
Result so far: 33195.0
If we take 90 away from 102, we end up 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.

Going ahead to step 7:
When dividing 120 by 18, we get 6 with a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 33195.6
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.

Step 8:
If we divide 120 by 18, we get 6 and a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 33195.66
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.

In conclusion, the division gives 33195.66 with a balance of 0.012.