We divide 18241225 by 18
The aim is to understand the frequency of 18 in 18241225.

Going ahead to step 1:
18 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 18

Let's proceed to step 2:
When dividing 18 by 18, we get 1 with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 18 away from 18, we end up with 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 18

Going ahead to step 3:
When dividing 2 by 18, we get 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (4) from the dividend, attach it to 2 and continue: 24 / 18

On to step 4:
24 divided by 18 is 1 with a remainder of 6.
Record the quotient 1 as the next digit in the result. 
Result so far: 101.0
Deduct 18 from 24 and we're left with 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 18

On to step 5:
If we divide 61 by 18, we get 3 and a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 1013.0
Deduct 54 from 61 and we're left with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 18

Advancing to step 6:
If we divide 72 by 18, we get 4 and a remainder of 0.
The next digit of our result is 4. 
Result so far: 10134.0
Deduct 72 from 72 and we're left with 0.
Take the next digit (2) from the dividend and append it to 0, then repeat: 2 / 18

Moving on to step 7:
18 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 101340.0
If we subtract 0 from 2, we get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 18

Step 8:
If we divide 25 by 18, we get 1 and a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 1013401.0
Subtracting 18 from 25 leaves us 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.

On to step 9:
18 can be fit into 70 3 times, resulting in a remainder of 16.
The number 3 becomes the next digit in our result. 
Result so far: 1013401.3
Deduct 54 from 70 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 10:
If we divide 160 by 18, we get 8 and a remainder of 16.
The next digit of our result is 8. 
Result so far: 1013401.38
The remainder is 16 after subtracting 144 from 160.
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 11:
The number 18 fits into 160 8 times, leaving a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 1013401.388
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.

The final outcome is 1013401.388, with a leftover of 0.0016.