590854 ÷ 18 
The aim is to understand the frequency of 18 in 590854.

Advancing to step 1:
When dividing 5 by 18, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 18

Step 2:
When dividing 59 by 18, we get 3 with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 54 from 59 to get 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 18

On to step 3:
18 can be fit into 50 2 times, resulting in a remainder of 14.
The number 2 becomes the next digit in our result. 
Result so far: 32.0
If we subtract 36 from 50, we get 14.
Bring next digit (8) of the dividend behind the 14 and repeat the process: 148 / 18

Going ahead to step 4:
18 goes into 148 8 times with a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 328.0
If we subtract 144 from 148, we get 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 18

On to step 5:
When dividing 45 by 18, we get 2 with a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 3282.0
Deduct 36 from 45 and we're left with 9.
Append the next digit (4) from the dividend to 9 and continue with: 94 / 18

Let's proceed to step 6:
The number 18 fits into 94 5 times, leaving a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 32825.0
If we take 90 away from 94, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 7:
18 goes into 40 2 times with a remainder of 4.
The next digit of our result is 2. 
Result so far: 32825.2
Subtracting 36 from 40 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 8:
If we divide 40 by 18, we get 2 and a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 32825.22
If we subtract 36 from 40, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The quotient of the division is 32825.22, and the remainder is 0.004.