We're dividing 229725 by 18 
The aim is to understand the frequency of 18 in 229725.

Step 1:
When dividing 2 by 18, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 18

On to step 2:
If we divide 22 by 18, we get 1 and a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 18 from 22, we get 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 18

Step 3:
49 divided by 18 is 2 with a remainder of 13.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtract 36 from 49 to get 13.
Bring next digit (7) of the dividend behind the 13 and repeat the process: 137 / 18

Step 4:
When dividing 137 by 18, we get 7 with a remainder of 11.
Record the quotient 7 as the next digit in the result. 
Result so far: 127.0
If we subtract 126 from 137, we get 11.
Append the next digit (2) from the dividend to 11 and continue with: 112 / 18

Step 5:
112 divided by 18 is 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 1276.0
If we take 108 away from 112, we end up with 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 18

Step 6:
18 goes into 45 2 times with a remainder of 9.
The next digit of our result is 2. 
Result so far: 12762.0
Subtracting 36 from 45 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 7:
18 can be fit into 90 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 12762.5
If we subtract 90 from 90, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
When dividing 0 by 18, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 12762.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
The number 18 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12762.5
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 12762.5, with a leftover of 0.0.