We're dividing 525092 by 15 
The aim is to understand the frequency of 15 in 525092.

Going ahead to step 1:
15 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 15

Let's proceed to step 2:
If we divide 52 by 15, we get 3 and a remainder of 7.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 45 from 52, we get 7.
Grab the next digit (5) from the dividend, add it to 7, then carry on: 75 / 15

Step 3:
If we divide 75 by 15, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 35.0
If we subtract 75 from 75, we get 0.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 15

On to step 4:
If we divide 0 by 15, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 350.0
Subtract 0 from 0 to get 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 15

Moving on to step 5:
9 divided by 15 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 3500.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (2) from the dividend and append it to 9, then repeat: 92 / 15

Advancing to step 6:
15 can be fit into 92 6 times, resulting in a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 35006.0
Subtracting 90 from 92 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 7:
15 can be fit into 20 1 times, resulting in a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 35006.1
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.

Advancing to step 8:
When dividing 50 by 15, we get 3 with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 35006.13
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.

Let's proceed to step 9:
50 divided by 15 is 3 with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 35006.133
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.

After the division, we end up with 35006.133 and a remainder of 0.0005.