260835 ÷ 18 
The aim is to understand the frequency of 18 in 260835.

On to step 1:
18 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (6) from the dividend, add it to 2, then carry on: 26 / 18

Moving on to step 2:
18 goes into 26 1 times with a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 18 away from 26, we end up with 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 18

Moving on to step 3:
18 can be fit into 80 4 times, resulting in a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
The remainder is 8 after subtracting 72 from 80.
Append the next digit (8) from the dividend to 8 and continue with: 88 / 18

Moving on to step 4:
When dividing 88 by 18, we get 4 with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 144.0
The remainder is 16 after subtracting 72 from 88.
Fetch the next digit (3) from the dividend, attach it to 16 and continue: 163 / 18

Step 5:
18 can be fit into 163 9 times, resulting in a remainder of 1.
The next digit of our result is 9. 
Result so far: 1449.0
The remainder is 1 after subtracting 162 from 163.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 18

Step 6:
The number 18 fits into 15 0 times, leaving a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 14490.0
Deduct 0 from 15 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
18 goes into 150 8 times with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 14490.8
If we take 144 away from 150, 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.

Moving on to step 8:
The number 18 fits into 60 3 times, leaving a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 14490.83
Subtract 54 from 60 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 9:
The number 18 fits into 60 3 times, leaving a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 14490.833
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.

Our division results in 14490.833 with a remaining 0.0006.