853681 divided by 15 
The aim is to understand the frequency of 15 in 853681.

Let's proceed to step 1:
15 can be fit into 8 0 times, resulting in 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.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 15

Advancing to step 2:
If we divide 85 by 15, we get 5 and a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 10 after subtracting 75 from 85.
Grab the next digit (3) from the dividend, add it to 10, then carry on: 103 / 15

Step 3:
If we divide 103 by 15, we get 6 and a remainder of 13.
Put 6 as the next digit of the answer. 
Result so far: 56.0
If we subtract 90 from 103, we get 13.
Fetch the next digit (6) from the dividend, attach it to 13 and continue: 136 / 15

Moving on to step 4:
15 can be fit into 136 9 times, resulting in a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 569.0
Subtracting 135 from 136 leaves us with 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 15

Moving on to step 5:
15 can be fit into 18 1 times, resulting in a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 5691.0
Subtracting 15 from 18 leaves us with 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 15

Moving on to step 6:
If we divide 31 by 15, we get 2 and a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 56912.0
The remainder is 1 after subtracting 30 from 31.
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:
15 goes into 10 0 times with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 56912.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
15 can be fit into 100 6 times, resulting in a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 56912.06
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.

Advancing to step 9:
15 can be fit into 100 6 times, resulting in a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 56912.066
Deduct 90 from 100 and we're left 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 outcome is 56912.066, with a leftover of 0.001.