235288 ÷ 18 
The aim is to understand the frequency of 18 in 235288.

Going ahead to step 1:
The number 18 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 18

Let's proceed to step 2:
18 goes into 23 1 times with a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 5 after subtracting 18 from 23.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 18

On to step 3:
18 can be fit into 55 3 times, resulting in a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
The remainder is 1 after subtracting 54 from 55.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 18

Advancing to step 4:
18 can be fit into 12 0 times, resulting in a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 130.0
The remainder is 12 after subtracting 0 from 12.
Take the next digit (8) from the dividend and append it to 12, then repeat: 128 / 18

Let's proceed to step 5:
128 divided by 18 is 7 with a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 1307.0
If we subtract 126 from 128, we get 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 18

On to step 6:
28 divided by 18 is 1 with a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 13071.0
If we subtract 18 from 28, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 7:
100 divided by 18 is 5 with a remainder of 10.
The next digit of our result is 5. 
Result so far: 13071.5
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
The number 18 fits into 100 5 times, leaving a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 13071.55
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 13071.55 with a remainder of 0.01.