We look at the division of 323737 by 18 
The aim is to understand the frequency of 18 in 323737.

Moving on to step 1:
When dividing 3 by 18, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (2) from the dividend to 3 and continue with: 32 / 18

Going ahead to step 2:
When dividing 32 by 18, we get 1 with a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 18 from 32 leaves us with 14.
Fetch the next digit (3) from the dividend, attach it to 14 and continue: 143 / 18

On to step 3:
If we divide 143 by 18, we get 7 and a remainder of 17.
Use 7 as the next digit of our solution. 
Result so far: 17.0
The remainder is 17 after subtracting 126 from 143.
Include the next digit (7) from the dividend after 17, then repeat: 177 / 18

On to step 4:
The number 18 fits into 177 9 times, leaving a remainder of 15.
Write down 9 as next digit of the result. 
Result so far: 179.0
If we subtract 162 from 177, we get 15.
Fetch the next digit (3) from the dividend, attach it to 15 and continue: 153 / 18

Let's proceed to step 5:
153 divided by 18 is 8 with a remainder of 9.
The number 8 becomes the next digit in our result. 
Result so far: 1798.0
Subtracting 144 from 153 leaves us with 9.
Append the next digit (7) from the dividend to 9 and continue with: 97 / 18

On to step 6:
18 can be fit into 97 5 times, resulting in a remainder of 7.
The number 5 becomes the next digit in our result. 
Result so far: 17985.0
If we take 90 away from 97, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 7:
When dividing 70 by 18, we get 3 with a remainder of 16.
Write down 3 as next digit of the result. 
Result so far: 17985.3
Subtract 54 from 70 to get 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 8:
When dividing 160 by 18, we get 8 with a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 17985.38
If we subtract 144 from 160, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 9:
160 divided by 18 is 8 with a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 17985.388
Subtract 144 from 160 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 17985.388 with a remaining 0.0016.