881571 ÷ 15 
The aim is to understand the frequency of 15 in 881571.

Going ahead to step 1:
8 divided by 15 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (8) from the dividend, add it to 8, then carry on: 88 / 15

Advancing to step 2:
The number 15 fits into 88 5 times, leaving a remainder of 13.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we take 75 away from 88, we end up with 13.
Fetch the next digit (1) from the dividend, attach it to 13 and continue: 131 / 15

Advancing to step 3:
15 goes into 131 8 times with a remainder of 11.
Record the quotient 8 as the next digit in the result. 
Result so far: 58.0
If we take 120 away from 131, we end up with 11.
Grab the next digit (5) from the dividend, add it to 11, then carry on: 115 / 15

On to step 4:
15 can be fit into 115 7 times, resulting in a remainder of 10.
Record the quotient 7 as the next digit in the result. 
Result so far: 587.0
Subtracting 105 from 115 leaves us with 10.
Fetch the next digit (7) from the dividend, attach it to 10 and continue: 107 / 15

Going ahead to step 5:
15 can be fit into 107 7 times, resulting in a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 5877.0
The remainder is 2 after subtracting 105 from 107.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 15

Going ahead to step 6:
21 divided by 15 is 1 with a remainder of 6.
The next digit of our result is 1. 
Result so far: 58771.0
Deduct 15 from 21 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
60 divided by 15 is 4 with a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 58771.4
Subtract 60 from 60 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.

Let's proceed to step 8:
When dividing 0 by 15, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 58771.4
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.

Advancing to step 9:
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: 58771.4
If we subtract 0 from 0, 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.

The quotient of the division is 58771.4, and the remainder is 0.0.