We're dividing 250480 by 18 
The aim is to understand the frequency of 18 in 250480.

Advancing to step 1:
The number 18 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 18

Step 2:
25 divided by 18 is 1 with a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 18 from 25 to get 7.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 18

Moving on to step 3:
When dividing 70 by 18, we get 3 with a remainder of 16.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtracting 54 from 70 leaves us with 16.
Include the next digit (4) from the dividend after 16, then repeat: 164 / 18

Let's proceed to step 4:
18 goes into 164 9 times with a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 139.0
Subtracting 162 from 164 leaves us with 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 18

Step 5:
If we divide 28 by 18, we get 1 and a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 1391.0
Subtract 18 from 28 to get 10.
Bring next digit (0) of the dividend behind the 10 and repeat the process: 100 / 18

On to step 6:
If we divide 100 by 18, we get 5 and a remainder of 10.
The next digit of our result is 5. 
Result so far: 13915.0
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.

Let's proceed to step 7:
When dividing 100 by 18, we get 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 13915.5
Deduct 90 from 100 and we're left 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.

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: 13915.55
Subtract 90 from 100 to 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.

The quotient of the division is 13915.55, and the remainder is 0.01.