915528 ÷ 15 
The aim is to understand the frequency of 15 in 915528.

Going ahead to step 1:
15 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 15

Step 2:
15 goes into 91 6 times with a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we take 90 away from 91, we end up with 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 15

On to step 3:
When dividing 15 by 15, we get 1 with a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 61.0
Subtracting 15 from 15 leaves us with 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 15

Going ahead to step 4:
15 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 610.0
If we subtract 0 from 5, we get 5.
Grab the next digit (2) from the dividend, add it to 5, then carry on: 52 / 15

Going ahead to step 5:
If we divide 52 by 15, we get 3 and a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 6103.0
The remainder is 7 after subtracting 45 from 52.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 15

Let's proceed to step 6:
15 can be fit into 78 5 times, resulting in a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 61035.0
If we subtract 75 from 78, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
15 can be fit into 30 2 times, resulting in a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 61035.2
If we subtract 30 from 30, we 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:
0 divided by 15 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 61035.2
Subtracting 0 from 0 leaves us 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.

Advancing to step 9:
If we divide 0 by 15, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 61035.2
If we take 0 away from 0, we end up 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.

After the division, we end up with 61035.2 and a remainder of 0.0.