Let's divide 858927 by 15
The aim is to understand the frequency of 15 in 858927.

Moving on to step 1:
If we divide 8 by 15, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 15

On to step 2:
15 can be fit into 85 5 times, resulting in a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtract 75 from 85 to get 10.
Take the next digit (8) from the dividend and append it to 10, then repeat: 108 / 15

Advancing to step 3:
When dividing 108 by 15, we get 7 with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 57.0
Deduct 105 from 108 and we're left with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 15

Going ahead to step 4:
When dividing 39 by 15, we get 2 with a remainder of 9.
The next digit of our result is 2. 
Result so far: 572.0
Subtracting 30 from 39 leaves us with 9.
Bring next digit (2) of the dividend behind the 9 and repeat the process: 92 / 15

Going ahead to step 5:
If we divide 92 by 15, we get 6 and a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 5726.0
Deduct 90 from 92 and we're left with 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 15

Going ahead to step 6:
The number 15 fits into 27 1 times, leaving a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 57261.0
The remainder is 12 after subtracting 15 from 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 7:
120 divided by 15 is 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 57261.8
Subtract 120 from 120 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
15 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 57261.8
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
When dividing 0 by 15, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 57261.8
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 57261.8 with a remaining 0.0.