861481 divided by 18 
The aim is to understand the frequency of 18 in 861481.

Advancing to step 1:
The number 18 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 18

On to step 2:
The number 18 fits into 86 4 times, leaving a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 72 from 86 and we're left with 14.
Grab the next digit (1) from the dividend, add it to 14, then carry on: 141 / 18

Step 3:
18 goes into 141 7 times with a remainder of 15.
Put 7 as the next digit of the answer. 
Result so far: 47.0
Deduct 126 from 141 and we're left with 15.
Grab the next digit (4) from the dividend, add it to 15, then carry on: 154 / 18

Going ahead to step 4:
If we divide 154 by 18, we get 8 and a remainder of 10.
Put 8 as the next digit of the answer. 
Result so far: 478.0
Subtract 144 from 154 to get 10.
Append the next digit (8) from the dividend to 10 and continue with: 108 / 18

On to step 5:
The number 18 fits into 108 6 times, leaving a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 4786.0
If we take 108 away from 108, we end up with 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 18

Advancing to step 6:
When dividing 1 by 18, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 47860.0
If we take 0 away from 1, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
18 can be fit into 10 0 times, resulting in a remainder of 10.
The next digit of our result is 0. 
Result so far: 47860.0
Subtracting 0 from 10 leaves us 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.
The number 5 becomes the next digit in our result. 
Result so far: 47860.05
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
100 divided by 18 is 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 47860.055
If we take 90 away from 100, we end up 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.

The final result is 47860.055 with a remainder of 0.001.