285649 divided by 18 
The aim is to understand the frequency of 18 in 285649.

Let's proceed to step 1:
When dividing 2 by 18, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 18

Moving on to step 2:
18 goes into 28 1 times with a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 18 from 28 to get 10.
Fetch the next digit (5) from the dividend, attach it to 10 and continue: 105 / 18

Let's proceed to step 3:
105 divided by 18 is 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 15.0
The remainder is 15 after subtracting 90 from 105.
Append the next digit (6) from the dividend to 15 and continue with: 156 / 18

Step 4:
When dividing 156 by 18, we get 8 with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 158.0
Subtracting 144 from 156 leaves us with 12.
Include the next digit (4) from the dividend after 12, then repeat: 124 / 18

On to step 5:
124 divided by 18 is 6 with a remainder of 16.
Record the quotient 6 as the next digit in the result. 
Result so far: 1586.0
Subtract 108 from 124 to get 16.
Bring next digit (9) of the dividend behind the 16 and repeat the process: 169 / 18

Step 6:
If we divide 169 by 18, we get 9 and a remainder of 7.
Put 9 as the next digit of the answer. 
Result so far: 15869.0
Subtract 162 from 169 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 7:
If we divide 70 by 18, we get 3 and a remainder of 16.
Use 3 as the next digit of our solution. 
Result so far: 15869.3
The remainder is 16 after subtracting 54 from 70.
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 8:
When dividing 160 by 18, we get 8 with a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 15869.38
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.

Going ahead to step 9:
18 can be fit into 160 8 times, resulting in a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 15869.388
Deduct 144 from 160 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.

The final result is 15869.388 with a remainder of 0.0016.