249041 ÷ 18 
The aim is to understand the frequency of 18 in 249041.

Going ahead to step 1:
18 goes into 2 0 times with 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.
Include the next digit (4) from the dividend after 2, then repeat: 24 / 18

Step 2:
18 can be fit into 24 1 times, resulting in a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 18 from 24 and we're left with 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 18

Going ahead to step 3:
When dividing 69 by 18, we get 3 with a remainder of 15.
The next digit of our result is 3. 
Result so far: 13.0
The remainder is 15 after subtracting 54 from 69.
Append the next digit (0) from the dividend to 15 and continue with: 150 / 18

Let's proceed to step 4:
150 divided by 18 is 8 with a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 138.0
If we subtract 144 from 150, we get 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 18

Step 5:
18 can be fit into 64 3 times, resulting in a remainder of 10.
The next digit of our result is 3. 
Result so far: 1383.0
If we take 54 away from 64, we end up with 10.
Grab the next digit (1) from the dividend, add it to 10, then carry on: 101 / 18

On to step 6:
When dividing 101 by 18, we get 5 with a remainder of 11.
The next digit of our result is 5. 
Result so far: 13835.0
Subtract 90 from 101 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
The number 18 fits into 110 6 times, leaving a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 13835.6
Subtract 108 from 110 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
20 divided by 18 is 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 13835.61
If we take 18 away from 20, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 9:
18 goes into 20 1 times with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 13835.611
The remainder is 2 after subtracting 18 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 13835.611, with a leftover of 0.0002.