Let's divide 853427 by 15
The aim is to understand the frequency of 15 in 853427.

Going ahead to step 1:
The number 15 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 15

Step 2:
If we divide 85 by 15, we get 5 and a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Deduct 75 from 85 and we're left with 10.
Append the next digit (3) from the dividend to 10 and continue with: 103 / 15

Step 3:
15 can be fit into 103 6 times, resulting in a remainder of 13.
Record the quotient 6 as the next digit in the result. 
Result so far: 56.0
Subtracting 90 from 103 leaves us with 13.
Grab the next digit (4) from the dividend, add it to 13, then carry on: 134 / 15

Going ahead to step 4:
When dividing 134 by 15, we get 8 with a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 568.0
Deduct 120 from 134 and we're left with 14.
Bring next digit (2) of the dividend behind the 14 and repeat the process: 142 / 15

Moving on to step 5:
15 goes into 142 9 times with a remainder of 7.
Write down 9 as next digit of the result. 
Result so far: 5689.0
Subtract 135 from 142 to get 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 15

On to step 6:
15 goes into 77 5 times with a remainder of 2.
Record the quotient 5 as the next digit in the result. 
Result so far: 56895.0
The remainder is 2 after subtracting 75 from 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
The number 15 fits into 20 1 times, leaving a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 56895.1
Subtracting 15 from 20 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 8:
If we divide 50 by 15, we get 3 and a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 56895.13
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 9:
The number 15 fits into 50 3 times, leaving a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 56895.133
The remainder is 5 after subtracting 45 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Our division results in 56895.133 with a remaining 0.0005.