391479 divided by 18 
The aim is to understand the frequency of 18 in 391479.

Advancing to step 1:
The number 18 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 18

Advancing to step 2:
If we divide 39 by 18, we get 2 and a remainder of 3.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 36 from 39 leaves us with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 18

On to step 3:
18 goes into 31 1 times with a remainder of 13.
The next digit of our result is 1. 
Result so far: 21.0
If we take 18 away from 31, we end up with 13.
Fetch the next digit (4) from the dividend, attach it to 13 and continue: 134 / 18

On to step 4:
18 goes into 134 7 times with a remainder of 8.
Put 7 as the next digit of the answer. 
Result so far: 217.0
If we take 126 away from 134, we end up with 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 18

On to step 5:
The number 18 fits into 87 4 times, leaving a remainder of 15.
Put 4 as the next digit of the answer. 
Result so far: 2174.0
Subtracting 72 from 87 leaves us with 15.
Grab the next digit (9) from the dividend, add it to 15, then carry on: 159 / 18

On to step 6:
18 goes into 159 8 times with a remainder of 15.
The number 8 becomes the next digit in our result. 
Result so far: 21748.0
Subtracting 144 from 159 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 7:
18 can be fit into 150 8 times, resulting in a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 21748.8
If we subtract 144 from 150, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 8:
When dividing 60 by 18, we get 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 21748.83
Deduct 54 from 60 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 9:
18 goes into 60 3 times with a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 21748.833
The remainder is 6 after subtracting 54 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

In conclusion, the division gives 21748.833 with a balance of 0.0006.