We look at the division of 486088 by 18 
The aim is to understand the frequency of 18 in 486088.

Going ahead to step 1:
When dividing 4 by 18, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 18

Moving on to step 2:
The number 18 fits into 48 2 times, leaving a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 36 from 48 leaves us with 12.
Append the next digit (6) from the dividend to 12 and continue with: 126 / 18

Advancing to step 3:
If we divide 126 by 18, we get 7 and a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 27.0
Subtracting 126 from 126 leaves us with 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 18

Advancing to step 4:
18 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 270.0
If we take 0 away from 0, we end up with 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 18

Let's proceed to step 5:
18 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 2700.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (8) from the dividend and append it to 8, then repeat: 88 / 18

On to step 6:
18 can be fit into 88 4 times, resulting in a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 27004.0
The remainder is 16 after subtracting 72 from 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 7:
The number 18 fits into 160 8 times, leaving a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 27004.8
Subtract 144 from 160 to 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.

Let's proceed to step 8:
When dividing 160 by 18, we get 8 with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 27004.88
If we take 144 away from 160, we end up 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.

The quotient of the division is 27004.88, and the remainder is 0.016.